It will be animal cells differentiated into muscle tissues on collagen scaffolds initially. The technology comes from attempts to grow functional organs (ie, liver) that are biocompatible in the body serum proper. If there aren't health effects from transplantation within the animal type you can probably eat the animal tissues just fine. It's the same thing. It's meat. It's just without the animal suffering. And hope…
We could rewild huge parts of the Earth, returning the habitat to nature.