Waterloo Plugins

Enables Rich Snippets for search engines. Show recipe name, rating, image, preparation time, and more on Google’s search results.
This plugin allows 1 recipe per post. For example, to set the preparation time of your recipe post, add the following shortcode into your post: 
 [recipe type=”prepTime”]1 hour and 45 minutes[/recipe]
All supported properties with examples:
<ul>
<li>name
<ul>
<li>The name of the dish.</li>
</ul>
</li>
<li>image
<ul>
<li>URL of an image of the dish being prepared. </li>
</ul>
</li>
<li>description
<ul>
<li>A short summary describing the dish.</li>
</ul>
</li>
<li>rating
<ul>
<li>A numerical rating for the item.</li>
</ul>
</li>
<li>ratingCount
<ul>
<li>The count of total number of ratings.</li>
</ul>
</li>
<li>prepTime
<ul>
<li>The length of time it takes to prepare the recipe for dish.</li>
</ul>
</li>
<li>cookTime
<ul>
<li>The time it takes to actually cook the dish.</li>
</ul>
</li>
<li>totalTime
<ul>
<li>The total time it takes to prepare the cook the dish.</li>
</ul>
</li>
<li>yield
<ul>
<li>The quantity produced by the recipe. For example: number of people served, or number of servings.</li>
</ul>
</li>
<li>instructions
<ul>
<li>The steps to make the dish.</li>
</ul>
</li>
<li>ingredient
<ul>
<li>An ingredient used in the recipe. (can have multiples)</li>
</ul>
</li>
</ul>
These properties will be used by search engines and other services to serve better content to your users. If you want to add a property but you don’t want to display the property, you can add <code>display="none"</code>. For example: 
 [recipe type=”description” display=”none”]You can see this on Google, but not on my blog[/recipe]
Here’s an example of a fully annotated post: 
 [recipe type=”name”]Grandma’s Holiday Apple Pie[/recipe]
 [recipe type=”image” display=”none”]apple-pie.jpg[/recipe] 
 Published: [recipe type=”datePublished”]November 5, 2009[/recipe] 
 [recipe type=”description”]This is my grandmother’s apple pie recipe. I like to add a dash of nutmeg.[/recipe]
<pre><code>[recipe type="rating"]4.0[/recipe] stars based on
[recipe type="ratingCount"]35[/recipe] reviews

Prep time: [recipe type="prepTime"]30 min[/recipe]
Cook time: [recipe type="cookTime"]1 hour[/recipe]
Total time: [recipe type="totalTime"]1 hour 30 min[/recipe]
Yield: [recipe type="yield"]1 9" pie (8 servings)[/recipe]

Ingredients:
[recipe type="ingredient"]Thinly-sliced apples: 6 cups[/recipe]
[recipe type="ingredient"]White sugar: 3/4 cup[/recipe]
...

Directions:
[recipe type="instructions"]
1. Cut and peel apples
2. Mix sugar and cinnamon. Use additional sugar for tart apples.
...
[/recipe]
</code></pre>

SEO Recipe Snippets

Very good

Show recipe snippets on Google search results.

Tim van Iersel

Adds custom field to the post & pages editor for custom JSON-ld schema markup also known as structured data. The plugin also validates if the JSON is formated correctly. <a href="http://coderisk.com/wp/plugin/websitescanner-custom-schema/RIPS-8iSfZmxGFd" rel="nofollow ugc"></a>
Add your own JSON-ld on every page, post and custom post without the <code><script></code> to show your own custom Schema markup.
Works well with the following plugins:
<ul>
<li><a href="https://wordpress.org/plugins/remove-schema/" title="Remove Schema WordPress plugin" rel="ugc">Remove Schema</a></li>
</ul>
Usecases:
With the combination of the WordPress plugin it’s easy to overwrite the schema on a specific page. 
If a plugin like Yoast SEO or other plugin or theme that generates schema you can disable the schema and add your own custom schema to the page.

Websitescanner Custom Schema

Adds custom field to the post & pages editor for custom JSON-ld schema markup also known as structured data.

SEO Recipe Snippets vs Websitescanner Custom Schema