<http://schema.org/recipeIngredient>
"10 (12-inch) wooden or metal skewers (soak wooden skewers in water for 30 minutes to avoid burning on the grill)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.chowhound.com/recipes/beef-and-vegetable-shish-kebabs-30716>