Zylyz is a beautiful free WP food theme. It's best suited for recipe blogs and other similar food-related websites. This food blog Worpress theme uses special recipe posts you can use to display ingredients and other information about a recipe in an organized way. The theme also comes with a customizable Nivo slider on homepage.
The theme comes with custom taxonomies and custom metabox. You can also use a regular blog layout for including general posts not related to recipes. The theme includes featured thumbnails and banner ads.