When I was a kid, my parents tried this. They bought a huge upright freezer and half a cow that a farmer butchered for them. That damn cow meat was as tough as shoe leather. I was just a kid, but never in my life prior to this had I been given such tough beef. I couldn't chew it, and when I did managed to chew a small piece for five minutes, it left a little wadded rag of fibers and connective tissue in my mouth that I had to swallow. And because my father had bought half the cow, we were forced to eat that fucking shoe leather for months. Another time we bought some chickens from a local farm instead of from the supermarket. They, too, were tough as leather. I would never have believed that a chicken could be so tough. There was nothing my mother could to that would make it tender. It didn't matter how long it was cooked, or what way it was cooked. She ended up turning those chickens into soup. It made me appreciate how uniform and tender the chickens you buy from the supermarket are.