Quote:
Originally Posted by Argie's Wife
It's all animal protein, no matter what part of the animal it is...
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Yes and no. Although true that it is all animal protein, there is a difference between regular protein and collagen protein. Lips, ears, snouts, tongue, cheek and other cuts have a high collagen content and are not a good source of protein for making emulsions such as Frankfurts or bologna. This is why they must be labeled separately and not come under "beef" or "pork".