Trim the giblets, eliminating the green bile ducts from the liver. Rinse them for a good, long time, then cut them into small pieces. Skin the sausages and crumble the sausage meat. Soak the dried porcini for 20 minutes in at least two changes of warm water. Drain, rinse, and squeeze well, then chop, not too finely. Grate the truffle.
Put the liver and the sausages in a small pan with <