Meat-based Meat

Another idea; a lot of talk about plant-based meat. What about meat-based meat. Meat carries with it a lot of energy in a small quantity, that's why humans are omnivores. If they were herbivores they'd spend all day eating plants and have no time left to do anything else. Eating meat is the answer. This is criticised as inefficient but it really isn't, that's why humans domesticated wild animals and started farming.

Lecture over, here's the idea. You have a factory growing beef. It works like a giant sausage factory except the factory grows the meat from basic ingredients. No, I'm not talking about feed lots, this is a factory growing the meat and then you lop off the end product and sell the steaks. When I put this idea to someone they reacted by calling the factory a giant womb, and that's the idea. The brain would be a computer controlling all the inputs. It would also produce fertiliser as a byproduct and it could capture methane (farts and belching) thus preventing greenhouse emissions. What do you think?