Sara Lee’s Ball Park Franks, the most popular hot dog brand in the U.S. as of 2011, lists the first ingredient in their product as “mechanically separated turkey.” What’s that, you ask? The USDA describes it as a “paste-like and batter-like poultry product [that is] produced by forcing bones, with attached edible tissue, through a sive or similar device under high pressure.” Yum.