Full fat milk is literally unskimmed milk with the fat percentage that it naturally has.
The abomination mutation, is the fact that there are adult mammals that can digest milk in huge quantities. We are the only species that has that trait. And only about a third of us can do that.
And you better not look up, what heavy cream is... ;-)
Anyway, I do need liquids to survive. It's just impractical to switch my diet to ice.