Hot dogs may contain “variety meats” and meat byproducts including the heart, liver and kidneys of various animals
along with regular meat cut from the bone, according to the U.S. Department of Agriculture.
To be considered hot dogs, frankfurters, wieners or bologna by the USDA, the processed meat product must also “consist of not less than 15% of one or more kinds of raw skeletal muscle meat with raw meat byproducts.”
Every species of meat must be named individually in a hot dog package’s list of ingredients, the USDA says. Hot dog producers often make their products from mechanically separated meat, “a paste-like and batter-like meat product,” the USDA explains.
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