A '''hot dog''', or Frankfurter, is a [[sausage]] made from [[beef]] or [[pork]] or both; many tinned and readily available types contain [[chicken]] and mechanically-recovered meat of various unspecified kinds. In recent years, vegetable and [[soy]] hot dogs have also gained popularity. | A '''hot dog''', or Frankfurter, is a [[sausage]] made from [[beef]] or [[pork]] or both; many tinned and readily available types contain [[chicken]] and mechanically-recovered meat of various unspecified kinds. In recent years, vegetable and [[soy]] hot dogs have also gained popularity. |