I have been thinking about this for a while. About 4 years ago we bough a whole pig and it came with about 7 lbs of lard. Or maybe suet. It's been in the freezer since. I'm thinking that I could use it for soap to make some lard soaps. I don't know what else to do with old lard. How can I tell if it's been rendered already? Or should I just melt it down again?