Skin, bone, put on trays and in the fridge for 3 or 4 days. Yeh, it does get crowded, but with only two of us in the house it works. I fold up a glob of paper towels and put in the bottom of the trays to absorb the blood. On top of the paper towels I put a layer of wax paper that I've cut a bunch of slits in to allow the blood to migrate under the wax paper to the paper towels. I cover the whole deal with saran wrap to keep it from absorbing stink from the fridge and drying out.