Masala dosa is stuffed dosa. There are two parts: the dosa and the stuffing. The dosa is made in the usual way by soaking rice and lentils overnight in water and then grinding it to a batter. The fermented batter is used to make dosa. The stuffing is made from boiled potatoes with a seasoning of mustard seeds and garnishing of grated coconut, coriander, and lemon juice.