We have a lot of entrepreneurs here. Why don't we start with an easier lab-grown animal product than something we ingest? How about lab-grown fur coats (EDIT from evilduck's comment: or lab-grown leather for clothing, furniture, shoes, etc)? Who wouldn't want to wear a "mink" coat created with no animal pain? Develop the technology on something we don't have to eat, along with the associated health risks and sensitiv…
The idea is generally that growing leather involves solving many of the same problems as growing meat, but lets you bootstrap the business on something that doesn't involve the FDA clearing you as a food (nor does it have the same cognitive effects on people wearing something lab-grown vs eating something lab-grown).