Why does some bacon contain whey powder?
Whey powder is often used in processed meats for bulking and binding.  In the case of whole muscles, they are often injected with a brine (an ingredient of which is whey protein) to &quot;enhance moisture and tenderness&quot;, as the document states.  I could also imagine it as a binding agent in turkey &quot;bacon&quot;, where ground turkey is formed and sliced.