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.
There was once a thought experiment about whether a hypothetical potato containing a pig gene (to make it tastily fatty) would be halal and/or kosher. IIRC, because of the different philosophical bases of the two taboos, it would have been one but not the other, though I can’t remember which.