Lab Meat
I know this sounds repulsive, but I think a good shortcut to lab grown meat would be similar to KFC’s urban myth of “headless organisms fed by tubes” [1]. If you give it a bit of thought, it might be more ethical raising brainless and senseless organisms for human consumption. It also solves many sanitary problems in farms (antibiotics, crowded living conditions) and it allows us to give pasture lands back to nature.
Assuming that such meat was demonstrably safer for humans to consume, why would we choose to keep eating “nature’s animals”? It’s taboo what keeps us from doing this.