“There is a verse in the Old Testament that commands that the mother’s milk not be used to cook the meat of her calf.”
Actually, it was a “kid.” And it was one Ten Commandments mentioned in I believe Exodus 34 (if I remember correctly, there were a few differences in the ten after Moses broke the first tablets, but I don’t recall for certain, I’m not an Old Testament buff).
Ex 34:26 - You shall bring the first of the first fruits of your ground to the house of Yahweh your God. You shall not boil a young goat in its mother’s milk.”