Onion Sambar

Pressure cook 1 cup toor dal or red lentils in 3 cups of water. In a separate pot, heat a little oil and pop a little mustard seed and add 2 slivered onions. Saute. Add 1-2 tsp sambar powder to taste. Add 1 - 2 tomatoes chopped. Add 1 tsp salt Add a little water. Cook. Add mashed dal or lentils. Add 1-2 tsp lemon juice. Add enough water to make souplike consistency.