So, what exactly are HOT DOGS and how are they made? Basically, hot dogs are comprised of trimmings, or leftovers, from cuts of steak, chicken, and pork chops. A revealing 2007 forensic study showed that hot dogs are made MOSTLY of bone, blood vessels, nerves, cartilage, and skin with less than 10% of the ingredients containing actual meat. After being ground into a smoothly textured "meat batter", the mixture is combined with food starch, water, and seasonings such as salt, ground mustard powde