Slice it thin like thick bacon and pan fry it like bacon and yuuuuummmmm! It was a treat when I was young.
It still is a fav of mine. There’s a small cafe in town that has fatback biscuits on the breakfast menu everyday, and they sell a bunch. But to my taste the best flavored lard is goose lard, smeared on a thick slab of heavy dark rye bread, a little salt and black pepper, and maybe a very thin slice of fresh onion. I found it on the menus of several small gasthauses during my 12 years in Germany.