You probably don't have enough fats. Most don't if you have a freezer, you can get it and make lard or tallow. Super useful even from a non food perspective. But if you don't have a freezer, the only way to store enough fats is nuts or storing oil which I don't recommend as the ones that store for a long time are just industrial lubricants and the good ones like olive oil are really not good when stored long term.