What’s in a McDonald’s hamburger? It is obviously a very closely guarded secrete, all you ever hear is “100% all beef “ which tells you nothing. For instance, is there any meat in it? Meat, as in actual skeletal muscle tissue, or is it 100% de-fatted fat tissue, cow lips, intestines, organs, anuses, vaginas, sinus tracts, flaked and formed gristle and tendons, limp nodes, cyst sacks, etc. If there is any actual skeletal muscle tissue, what is the actual parentage? 5%? 15%? No body knows if there is any muscle tissue at all in them, it’s a closely guarded secrete. I have yet to see any actual lab tests that detail exact parts at exact percentages. That being said, it’s not such a bad thing. In the old days when people lived off the land, people ate the whole animal not letting anything go to waste, even cracking the bones to suck the marrow out. By eating the eye balls and other parts they got valuable nutrition that we don’t get today by eating only the steaks and ignoring the rest. So eating a fast food burger once in a while may be a good thing nutrition wise. Although I would still like to know exactly what's in it, and in what proportions, but that’s like asking who killed Kennedy.