hrecipe-rdf - Revision history

ThomasLoertsch: /* General Questions */ "no", and: "to the list, please".

2009-06-18T12:50:32Z

General Questions: "no", and: "to the list, please".

← Older revision		Revision as of 12:50, 18 June 2009
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	{{OpenIssue}} <span class="entry-summary author vcard"><span class="published">2009-06-17</span> raised by <span class="fn">[[User:BenWard\|BenWard]]</span></span>		{{OpenIssue}} <span class="entry-summary author vcard"><span class="published">2009-06-17</span> raised by <span class="fn">[[User:BenWard\|BenWard]]</span></span>
	<div class="entry-content discussion issues">		<div class="entry-content discussion issues">
	* <strong class="entry-title">Non-microformat content on µf wiki</strong>. I appreciate that the µf wiki is not exclusively used to document microformats (c.f. [[POSH]], [[social-network-anti-patterns]]), but it seems to be a new stretch to document RDFa here, especially when RDFa somewhat conflicts with some microformats design principals. Keeping the documentation here seems problematic as:		* <strong class="entry-title">Non-microformat content on µf wiki</strong>. I appreciate that the µf wiki is not exclusively used to document microformats (c.f. [[POSH]], [[social-network-anti-patterns]]), but it seems to be a new stretch to document RDFa here, especially when RDFa somewhat conflicts with some microformats design principals.
			*## i think you should elaborate on this point. i'm not sure what you are referring at. and please stay as close to aRecipe (the actual point of discussion here) as possible.
			Keeping the documentation here seems problematic as:
	*# This is not a community based around RDFa expertise, as such it seems unlikely that you will get thorough feedback		*# This is not a community based around RDFa expertise, as such it seems unlikely that you will get thorough feedback
			*## There are people in this community with very good RDFa skills and expertise (much better than mine for sure), well known and respected in both communities, RDF and microformats. yes, it's possible to like and use both.
	*# It dilutes and confuses the normative [[hRecipe]] documentation, which is itself unfinished.		*# It dilutes and confuses the normative [[hRecipe]] documentation, which is itself unfinished.
	*# The somewhat odd, unverified problem statement (“In some cases people want or need to use an RDF-based solution to add metadata to web pages” — who has ever asked to publish hRecipe in RDF? Especially given that it's an unstable draft. I don't think there's a strong use case for this that justifies confusing the real spec.		*## no, it thoroughly follows the hrecipe Draft and it explicitly states that it itself is not normative but hRecipe is
			*# The somewhat odd, unverified problem statement (“In some cases people want or need to use an RDF-based solution to add metadata to web pages”
			*## what's odd and unverified here? RDF and RDFa are used in a lot of places and for good reasons. there's nothing special about recipes that makes them useful as microformats (or RDFa) only.
			— who has ever asked to publish hRecipe in RDF?
			*## me, for example. do i have to ask first?
			Especially given that it's an unstable draft. I don't think there's a strong use case for this that justifies confusing the real spec.
			*## your reference to the "unstability" of the draft seems contrived. it is quite stable, it's used a lot, there are only very few open issues. and it wouldn't matter if it wasn't since aRecipe is also an exercise on how to map microformats to RDFa and the hRecipe draft can only profit from lessons learned here.

			side note: i do find it strange and unlucky that a reply to my post on the mailinglist is posted in the wiki without even notifying the list, especially when it goes as far as suggesting to remove this page. since there is not email notification for changes on wiki pages everyone should try to make it as easy as possible to follow discussions.
			since your criticism is rather profound i think you should post it on the list as a reply to my mail which i precisely posted to the list because i expected some debate. this very page was sitting here for weeks without getting any comment whatsoever but minutes after i pushed it to the list you ask for it's removal. i think that speaks for itself. --[[User:ThomasLoertsch\|ThomasLoertsch]] 12:50, 18 June 2009 (UTC)
	</div>		</div>
	</div>		</div>
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	<div class="entry-content discussion issues">		<div class="entry-content discussion issues">
	* <strong class="entry-title">hRecipe is a draft and making normative references to it is confusing</strong>. It seems unwise to be pursuing an effort to port hRecipe to a different language before the hRecipe vocabulary itself is stable.		* <strong class="entry-title">hRecipe is a draft and making normative references to it is confusing</strong>. It seems unwise to be pursuing an effort to port hRecipe to a different language before the hRecipe vocabulary itself is stable.
			*## you made that point above already. see my reply there--[[User:ThomasLoertsch\|ThomasLoertsch]] 12:50, 18 June 2009 (UTC)
	</div>		</div>
	</div>		</div>

BenWard: /* General Questions */ Added fundamental issues

2009-06-17T18:08:29Z

General Questions: Added fundamental issues

← Older revision		Revision as of 18:08, 17 June 2009
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	=== General Questions ===		=== General Questions ===

			<div class="hentry">
			{{OpenIssue}} <span class="entry-summary author vcard"><span class="published">2009-06-17</span> raised by <span class="fn">[[User:BenWard\|BenWard]]</span></span>
			<div class="entry-content discussion issues">
			* <strong class="entry-title">Non-microformat content on µf wiki</strong>. I appreciate that the µf wiki is not exclusively used to document microformats (c.f. [[POSH]], [[social-network-anti-patterns]]), but it seems to be a new stretch to document RDFa here, especially when RDFa somewhat conflicts with some microformats design principals. Keeping the documentation here seems problematic as:
			*# This is not a community based around RDFa expertise, as such it seems unlikely that you will get thorough feedback
			*# It dilutes and confuses the normative [[hRecipe]] documentation, which is itself unfinished.
			*# The somewhat odd, unverified problem statement (“In some cases people want or need to use an RDF-based solution to add metadata to web pages” — who has ever asked to publish hRecipe in RDF? Especially given that it's an unstable draft. I don't think there's a strong use case for this that justifies confusing the real spec.
			</div>
			</div>

			<div class="hentry">
			{{OpenIssue}} <span class="entry-summary author vcard"><span class="published">2009-06-17</span> raised by <span class="fn">[[User:BenWard\|BenWard]]</span></span>
			<div class="entry-content discussion issues">
			* <strong class="entry-title">hRecipe is a draft and making normative references to it is confusing</strong>. It seems unwise to be pursuing an effort to port hRecipe to a different language before the hRecipe vocabulary itself is stable.
			</div>
			</div>

	=== General Comments ===		=== General Comments ===

BenWard: Removing ‘draft specifications’ category as this is not a microformat.

2009-06-17T17:48:56Z

Removing ‘draft specifications’ category as this is not a microformat.

← Older revision		Revision as of 17:48, 17 June 2009
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	* [[recipe-issues]]		* [[recipe-issues]]
	towards the development of this draft.		towards the development of this draft.

	~~[[Category:Draft Specifications]]~~

ThomasLoertsch: /* related pages */

2009-05-19T10:58:47Z

← Older revision		Revision as of 10:58, 19 May 2009
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	==related pages==		==related pages==
	* [[hRecipe]]		* [[hRecipe]]
	* [[hrecipe-issues\|hRecipe issues]] ~~- issues regarding the hRecipe draft~~		* [[hrecipe-issues\|hRecipe issues]]
	* [[hrecipe-~~rdf~~\|hRecipe ~~in RDF~~]] ~~- mapping of hRecipe into a RDF vocabulary called "aRecipe"~~		* [[hrecipe-feedback\|hRecipe feedback]]

	Per the microformats [[process]], the [[recipe]] effort developed		Per the microformats [[process]], the [[recipe]] effort developed

ThomasLoertsch: /* Documentation */corrected broken links

2009-05-19T10:55:08Z

Documentation: corrected broken links

← Older revision		Revision as of 10:55, 19 May 2009
Line 7:		Line 7:
	[http://purl.org/arecipe/ aRecipe] is a mapping from hRecipe to RDF as thorough and 1:1 as possible. It is part of a bigger effort to map all microformats into one RDF vocabulary, called [http://purl.org/amicroformat/ aMicroformat]. But since that is a lot of work and will take some more time the aRecipe part of aMicroformat is a first shot.		[http://purl.org/arecipe/ aRecipe] is a mapping from hRecipe to RDF as thorough and 1:1 as possible. It is part of a bigger effort to map all microformats into one RDF vocabulary, called [http://purl.org/amicroformat/ aMicroformat]. But since that is a lot of work and will take some more time the aRecipe part of aMicroformat is a first shot.

	The official location of the voacbulary is at [http://purl.org/arecipe/ http://purl.org/arecipe/]. There you'll always find the latest version, currently in two encodings: [http://~~purl~~.~~org~~/arecipe/arecipe.n3 n3] and [http://~~purl~~.~~org~~/arecipe/arecipe.rdf RDF/XML]. Hopefully soon some documentation will be added as well.		The official location of the voacbulary is at [http://purl.org/arecipe/ http://purl.org/arecipe/]. There you'll always find the latest version, currently in two encodings: [http://rat.io/nal/amicroformat/arecipe/arecipe.n3 n3] and [http://rat.io/nal/amicroformat/arecipe/arecipe.rdf RDF/XML]. Hopefully soon some documentation will be added as well.

	== Implementation ==		== Implementation ==

ThomasLoertsch: a first shot

2009-05-19T10:50:13Z

a first shot

New page

= aRecipe - a mapping of the hRecipe microformat to RDF =

== Purpose ==
In some cases people want or need to use an RDF-based solution to add metadata to web pages. [http://www.w3.org/TR/xhtml-rdfa-primer/ RDFa] is a standardized way to do so. While it's not as easy to use as microformats it serves certain use cases that microformats can not handle like e.g. when you want to add metadata to certain parts of a page and other metadata to the page as a whole. RDFa is also a straight forward solution for domains which are not covered by a microformat but where a well established RDF vocabulary already exists.

== Documentation ==
[http://purl.org/arecipe/ aRecipe] is a mapping from hRecipe to RDF as thorough and 1:1 as possible. It is part of a bigger effort to map all microformats into one RDF vocabulary, called [http://purl.org/amicroformat/ aMicroformat]. But since that is a lot of work and will take some more time the aRecipe part of aMicroformat is a first shot.

The official location of the voacbulary is at [http://purl.org/arecipe/ http://purl.org/arecipe/]. There you'll always find the latest version, currently in two encodings: [http://purl.org/arecipe/arecipe.n3 n3] and [http://purl.org/arecipe/arecipe.rdf RDF/XML]. Hopefully soon some documentation will be added as well.

== Implementation ==
aRecipe has been implemented on http://www.essen-und-trinken.de, e.g. here: [http://www.essen-und-trinken.de/rezept/144350/apfelkuchen-vom-blech.html apple pie] (in german, sorry ;-). A convenient way to look at the RDFa is the [http://www.w3.org/2007/08/pyRdfa/ RDFa Distiller]. See below an excerpt of the RDF generated from the apple pie recipe.

Enjoy and leave comments and feedback at the bottom of this page.

== The RDF mapping of hRecipe ==
The original mapping at http://purl.org/arecipe/ additionally contains some more constructs to model the constraints on each element. These constructs are rather involved because the constraints are rather complex and OWL isn't particularily suited to model constraints. Because of that it's not sure if they will be part of the final version.

<pre>
<rdf:RDF xmlns="http://www.w3.org/2000/01/rdf-schema#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">

<owl:Ontology rdf:about="http://purl.org/amicroformat/arecipe/">
<comment>The hRecipe microformat is designed for the mark-up of instructions for creating meals, drinks or food-based items. <http://microformats.org/wiki/recipe#Introduction></comment>
<comment>This ontology is only informative. The normative version is always that on the site <http://microformats.org>.</comment>
<comment>microformats are a way to encode semantic information into (x)html. they define formats that share one common namespace. this piece of work defines a mapping from the hRecipe microformat into RDF by mirroring the elements of that microformat as straight as possible into an RDF vocabulary.</comment>
<label>aRecipe</label>
<seeAlso rdf:resource="http://microformats.org/wiki/hrecipe"/>
<owl:versionInfo>28042009</owl:versionInfo>
<owl:versionInfo>Draft 0.21</owl:versionInfo>
</owl:Ontology>

<owl:Class rdf:about="http://purl.org/amicroformat/arecipe/Recipe">
<comment>A Recipe is used to identify and describe values and metadata typically associated with a recipe.</comment>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hrecipe#hRecipe"/>
<label>recipe</label>
<subclassOf rdf:parseType="Resource">
<rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Restriction"/>
<owl:cardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#int">1</owl:cardinality>
<owl:onProperty rdf:resource="http://purl.org/amicroformat/arecipe/fn"/>
</subclassOf>
<subclassOf rdf:parseType="Resource">
<rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Restriction"/>
<owl:minCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#int">1</owl:minCardinality>
<owl:onProperty rdf:resource="http://purl.org/amicroformat/arecipe/ingredient"/>
</subclassOf>
<subclassOf rdf:parseType="Resource">
<rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Restriction"/>
<owl:maxCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#int">1</owl:maxCardinality>
<owl:onProperty rdf:resource="http://purl.org/amicroformat/arecipe/instructions"/>
<owl:onProperty rdf:resource="http://purl.org/amicroformat/arecipe/published"/>
<owl:onProperty rdf:resource="http://purl.org/amicroformat/arecipe/summary"/>
<owl:onProperty rdf:resource="http://purl.org/amicroformat/arecipe/yield"/>
</subclassOf>
<subclassOf rdf:parseType="Resource">
<rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Restriction"/>
<owl:minCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#int">0</owl:minCardinality>
<owl:onProperty rdf:resource="http://purl.org/amicroformat/arecipe/author"/>
<owl:onProperty rdf:resource="http://purl.org/amicroformat/arecipe/duration"/>
<owl:onProperty rdf:resource="http://purl.org/amicroformat/arecipe/nutrition"/>
<owl:onProperty rdf:resource="http://purl.org/amicroformat/arecipe/photo"/>
<owl:onProperty rdf:resource="http://purl.org/amicroformat/arecipe/tag"/>
</subclassOf>
</owl:Class>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/author">
<comment>An Author is the person who authored the recipe.</comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hAtom#Entry_Author"/>
<label>author</label>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
<seeAlso rdf:resource="http://microformats.org/wiki/hrecipe#author"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/duration">
<comment>The time it takes to prepare the meal described by the recipe. Multiple duration fields can be used to denote e.g. time for preparing a dough, time needed for the dough to raise, time to bake the dough, time for decorating the cake etc.</comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hrecipe#duration"/>
<label>duration</label>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/fn">
<comment>The title of a single recipe. A short textual description used to identify the work among interested parties. This can be the name of a meal or a short description regarding it's ingredients.</comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hCard"/>
<label>title</label>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
<seeAlso rdf:resource="http://microformats.org/wiki/hrecipe#fn"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/ingredient">
<comment>Describes one or more ingredients used in the recipe.</comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hrecipe#ingredient"/>
<label>ingredient</label>
<range rdf:resource="http://purl.org/amicroformat/arecipe/IngredientClass"/>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/instructions">
<comment>The method of the recipe.</comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hrecipe#instructions"/>
<label>instructions</label>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/nutrition">
<comment>Nutritional information like calories, fat, dietary fiber etc. </comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hrecipe#nutrition"/>
<label>nutrition</label>
<range rdf:resource="http://purl.org/amicroformat/arecipe/NutritionClass"/>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/photo">
<comment>Accompanying image. </comment>
<comment>See section 3.1.4 of RFC 2426. <http://www.ietf.org/rfc/rfc2426.txt></comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hcard"/>
<label>photo</label>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
<seeAlso rdf:resource="http://microformats.org/wiki/hrecipe#photo"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/published">
<comment>The date the recipe was published.</comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hAtom#Entry_Published"/>
<label>published</label>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
<seeAlso rdf:resource="http://microformats.org/wiki/hrecipe#published"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/summary">
<comment>The summary provides a short introduction or an accompanying statement about the recipe.</comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hCalendar"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hrecipe#summary"/>
<label>summary</label>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/tag">
<comment>Indicates that the referred resource serves as a 'tag', or keyword/subject, for the referring page.</comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/rel-tag#XMDP_profile"/>
<label>rel-tag</label>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
<seeAlso rdf:resource="http://microformats.org/wiki/hrecipe#tag"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/type">
<comment>Defines a type of the parent element. For instance a type of telephone number such as home or work. Used in conjunction with 'value'. <http://microformats.org/wiki/existing-classes></comment>
<comment>See 'type' in the various sections of RFC 2426. <http://www.ietf.org/rfc/rfc2426.txt></comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/IngredientClass"/>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/NutritionClass"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hcard"/>
<label>type</label>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/value">
<comment>This class name is used to distinguish the actual *value* of a property from any other cruft that may be in the element representing the property. <http://www.ietf.org/rfc/rfc2426.txt></comment>
<comment>Used in conjunction with 'type'. The actual value of a particular type. For instance a telephone number of type work such as +1.415.555.1212. <http://microformats.org/wiki/existing-classes></comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/IngredientClass"/>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/NutritionClass"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hcard"/>
<label>value</label>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
</owl:DatatypeProperty>

<owl:DatatypeProperty rdf:about="http://purl.org/amicroformat/arecipe/yield">
<comment>Specifies the quantity produced by the recipe, like how many persons it satisfyies or how many pieces can be made of it.</comment>
<domain rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<isDefinedBy rdf:resource="http://microformats.org/wiki/hrecipe#yield"/>
<label>yield</label>
<range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
</owl:DatatypeProperty>

<owl:Class rdf:about="http://purl.org/amicroformat/arecipe/IngredientClass">
<comment>A helper class for constructing the RDF-graph</comment>
</owl:Class>

<owl:Class rdf:about="http://purl.org/amicroformat/arecipe/NutritionClass">
<comment>A helper class for constructing the RDF-graph</comment>
</owl:Class>

<rdf:Description>
<rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Axiom"/>
<comment>Some fields are marked experimental since they exceed the minimum set of elements needed to describe a recipe but still are very commonly used on the web. It's not sure if they are relevant enough for inclusion in the format. Implementation and general uptake of these elements will be observed and inform further decisions. So their use is not at all discouraged - but use them with care and be prepared for their eventual removal from the final spec.</comment>
<owl:object rdf:resource="http://purl.org/amicroformat/arecipe/Recipe"/>
<owl:predicate rdf:resource="http://www.w3.org/2000/01/rdf-schema#domain"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/author"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/duration"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/instructions"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/nutrition"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/photo"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/published"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/summary"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/tag"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/type"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/value"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/yield"/>
</rdf:Description>

<rdf:Description>
<rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Axiom"/>
<comment>Some fields are marked experimental since they exceed the minimum set of elements needed to describe a recipe but still are very commonly used on the web. It's not sure if they are relevant enough for inclusion in the format. Implementation and general uptake of these elements will be observed and inform further decisions. So their use is not at all discouraged - but use them with care and be prepared for their eventual removal from the final spec.</comment>
<owl:object rdf:resource="http://purl.org/amicroformat/arecipe/IngredientClass"/>
<owl:object rdf:resource="http://purl.org/amicroformat/arecipe/NutritionClass"/>
<owl:predicate rdf:resource="http://www.w3.org/2000/01/rdf-schema#domain"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/type"/>
<owl:subject rdf:resource="http://purl.org/amicroformat/arecipe/value"/>
</rdf:Description>
</rdf:RDF>
</pre>

== Generated RDFa ==

<pre>
<?xml version="1.0" encoding="utf-8"?>
<rdf:RDF
xmlns:amf="http://purl.org/amicroformat/"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:xhv="http://www.w3.org/1999/xhtml/vocab#"
xmlns:xml="http://www.w3.org/XML/1998/namespace"
>
<amf:Recipe rdf:about="http://www.essen-und-trinken.de/rezept/144350">
<amf:duration xml:lang="de">1 h </amf:duration>
<amf:yield xml:lang="de">Für 24 Stücke</amf:yield>
<amf:tag rdf:resource="http://www.essen-und-trinken.de/rezepte/tag/schnellundeinfach"/>
<amf:tag rdf:resource="http://www.essen-und-trinken.de/rezepte/kategorie/party"/>
<amf:tag rdf:resource="http://www.essen-und-trinken.de/rezepte/kategorie/kuchentorte"/>
<amf:tag rdf:resource="http://www.essen-und-trinken.de/rezepte/tag/apfelkuchen"/>
<amf:tag rdf:resource="http://www.essen-und-trinken.de/rezepte/kategorie/backen"/>
<amf:tag rdf:resource="http://www.essen-und-trinken.de/rezepte/kategorie/gutvorzubereiten"/>
<amf:tag rdf:resource="http://www.essen-und-trinken.de/rezepte/kategorie/einfach"/>
<amf:tag rdf:resource="http://www.essen-und-trinken.de/rezepte/tag/apfel"/>
<amf:tag rdf:resource="http://www.essen-und-trinken.de/rezepte/kategorie/nuesse"/>
<amf:tag rdf:resource="http://www.essen-und-trinken.de/rezepte/kategorie/obst"/>
<amf:tag rdf:resource="http://www.essen-und-trinken.de/rezepte/tag/blechkuchen"/>
<amf:ingredient rdf:parseType="Literal">6 El Zitronensaft</amf:ingredient>

<amf:ingredient rdf:parseType="Literal">200 g Zucker</amf:ingredient>
<amf:ingredient rdf:parseType="Literal">100 g Schmand</amf:ingredient>
<amf:ingredient rdf:parseType="Literal">500 g Mehl</amf:ingredient>

<amf:ingredient rdf:parseType="Literal">1,2 kg Äpfel </amf:ingredient>
<amf:ingredient rdf:parseType="Literal">1 Pk. Backpulver</amf:ingredient>
<amf:ingredient rdf:parseType="Literal">100 g gehackte Mandeln</amf:ingredient>

<amf:ingredient rdf:parseType="Literal">300 g Butter</amf:ingredient>
<amf:ingredient rdf:parseType="Literal">3 El Calvados</amf:ingredient>
<amf:ingredient xml:lang="de"> Salz</amf:ingredient>

<amf:ingredient rdf:parseType="Literal">6 Eier </amf:ingredient>
<amf:ingredient rdf:parseType="Literal">125 g Puderzucker</amf:ingredient>
<amf:fn xml:lang="de">Apfelkuchen vom Blech</amf:fn>
<amf:instructions rdf:parseType="Literal">
1. Mandeln in einer Pfann ohne Fett anrösten. Herausnehmen und abkühlen lassen. Die Äpfel schälen, vierteln und entkernen. In Würfel schneiden und mit Zitronensaft beträufeln.2. Butter, Zucker und 1 Prise Salz cremig rühren. Eier nacheinander unterrühren. Mehl, Backpulver und Mandeln mischen und abwechselnd mit dem Schmand unter die Ei-Zucker-Masse rühren. Auf ein mit Backpapier belegtes Blech streichen. Apfelwürfel darüber streuen. Im vorgeheizten Ofen bei 175 ° backen ca. 40 Min. backen. 3. Puderzucker und Calvados glatt rühren und über den heißen Kuchen träufeln.</amf:instructions>
<amf:author rdf:parseType="Literal"> Von <a href="/user/melaFTL" rel="nofollow" xml:lang="de" xmlns="http://www.w3.org/1999/xhtml">melaFTL</a><a href="#" id="addFavoriteCookLinkActive" onclick="return false;; return false;" style="display:none" xml:lang="de" xmlns="http://www.w3.org/1999/xhtml"><img alt="Icon_user_rot" id="addFavoriteCookLinkAktiveImg" src="/img/icon_user_rot.gif"/></a> </amf:author>
<amf:note rdf:parseType="Literal">Der Kuchen wird weihnachtlich, wenn man in den Teig noch etwas Lebkuchengewürz gibt, etwa 1 1/2 Tl. </amf:note>
</amf:Recipe>
</rdf:RDF>
</pre>

== Feedback ==
Please add questions and comments in the following sections.
=== Template ===
{{issues-format}}

=== General Questions ===

=== General Comments ===

==related pages==
* [[hRecipe]]
* [[hrecipe-issues|hRecipe issues]] - issues regarding the hRecipe draft
* [[hrecipe-rdf|hRecipe in RDF]] - mapping of hRecipe into a RDF vocabulary called "aRecipe"

Per the microformats [[process]], the [[recipe]] effort developed
* [[recipe-examples]]
* [[recipe-formats]]
* [[recipe-brainstorming]] (see also [[recipe-brainstorming-archive]])
* [[recipe-issues]]
towards the development of this draft.

[[Category:Draft Specifications]]