The flakes are then removed and placed into cane baskets which allows the remaining liquid to drain off. There are several types of ricotta - sheep's milk, mixed, pasteurised - and also a range of artisanal varieties made with the addition of herbs, chilli pepper or truffles. Aged ricotta (matured under ash, made with bran or liqueur) can also be found, evoking the ancient flavours and traditions of Umbria.