Wait until they discover it has to have foetal calf serum to grow in, and you can guess how that is produced. You still need the cow to grow the pseudo-meat, foetal calf serum is part of the growth medium for these cells. Unless they have been able to synthesize a substitute for it, these pseudo-meat "burgers" are going to take a lot of calf serum.

If you don't care for reality, just wait a while; another will be along shortly. --A Rose