As a religious person I've been curious to read up on what religious scholars of various faith traditions with dietary restrictions have to say about lab-grown meats. Sadly, very few seem to have very settled opinions about it. And it's really only the Catholic Church that has the infrastructure to actually consult credentialed scientists to consult on these issues.
Most of the Hindu sources I've seen maintain that meat is bad on two levels. One is the ethical dimension of committing violence to things that feel pain. The other is an internal spiritual dimension where they believe meat is intrinsically not Sattvic. So it's less bad than real meat, but still not good.
The little I've seen from Jewish and Muslim sources suggests that they don't really see lab-grown as being any different from regular meat with regarding kashrut or halal food.
What qualifies as a pig? What if it's a hybrid? What if it has only a little bit of pig DNA? Could be interesting times ahead!
Seriously. If you genetically modified a pig to not have cloven hooves does it suddenly become kosher?
Generally religious scholars are scholars because they're trained in an intellectual tradition that involves understanding the underlying logic behind the rules so that they can be applied to the changing times and evolving contexts. That's the whole point of having a clergy in the first place. If it was just rote memorization of a rule book you wouldn't need them.
Talmundic law has managed to continue updating itself based on extrapolations of the underlying logic behind restrictions in the source text. Here is an example: http://www.kashrut.com/articles/buffalo/
And in Hinduism, the dietary restrictions are based on practical considerations around how the food is produced and its perceived metabolic impact on the body and mind. There is an established framework for evaluating any food by these standards.
Isn't the ban on pig products thought to have been based on it being a disease vector? Considering that this is no longer relevant with modern sanitation and medicine it would seem they're using it as a checklist rather than applying any sort of logic.
I went to a party once where a vegetarian was told a fake meat was used for some chili, but it really wasn't.
I'm only going to go so far to verify. I accept the risk, and at a certain point the blame is on them for lying to me.
I imagine lab meat will develop a distinct name like "clean meat" to distinguish it from traditional animal meat and plant-based meat.