Islamic scholars consulted by a leading producer of cultivated meat say that the newfangled protein — which is grown from animal cells and doesn’t require animals to be slaughtered — can be halal, or permissible under Muslim law.
And the Jewish Orthodox Union this month certified a strain of lab-grown chicken as kosher for the first time, “marking a significant step forward for the food technology’s acceptance under Jewish dietary law,” as the Times of Israel put it.
Why dubiously? Not all recipes use the calf serum anymore.
Some vegetarians do not like the idea of eating animal AT ALL, even if its ethically sourced and lab grown
I guess that makes sense if you’re in it for perceived health benefits. I think most vegetarians are ethically motivated, but I could be wrong.