I don’t know, I just looked it up online as Origin of Butter, and that is what came up. I know in Bible pork was unclean and not used in Old Testament, but was declared clean in New. Probably had to do with smoking/processing that came later.
Butter is versatile, and improves flavor of lots of things. It is great tenderizer/marinade for steak. I never liked margarine, it was a fake food...refused it.
I only started thinking about that because I was reading about how there was a rare gene for lactose intolerance and only people with the gene could live in the cold climates because those people could drink milk to get their vitamin D. And I thought, how weird, most people in the world had to stop drinking milk when they grew up, but your post made me realize I bet they could consume BUTTER.