Heat the oil in a heavy pot over a medium flame. When hot, put in the cumin seeds. A few seconds later, put in the garlic. Stir and fry until the garlic pieces turn golden. Now put in the onion. Stir and fry until the onion pieces begin to turn brown at the edges.
Put in the lentils and the measured water. Bring to the boil. Cover, reduce the heat to low and si