Lentil Sauce For Rice / 1 recipe foamy white steamed rice and bean dumplings, 1 recipe spicy lentil and radish sauce (follows), 1 1/2 cups yellow split peas (supermarket variety), 1/4 teaspoon turmeric, 4 1/2 cups water, 1 tablespoon sambaar powder (see tips, below), 1 tablespoon ground coriander.