<http://schema.org/recipeIngredient>
"1 cup &lt;span class='ingredient'&gt;vegetable oil&lt;/span&gt;, such as canola, peanut, or grapeseed"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.cookstr.com/recipes/homemade-mayonnaise-frank-stitt>