Step 1Place the dal and water in a medium saucepan over medium-high heat and bring to a boil. Reduce the heat to medium low and cook, partially covered, until tender, about 18 to 20 minutes. Do not drain.
Step 2Heat the olive oil in a medium saute pan over medium heat. Add the onion and cook until soft and pale golden, about 5 to 7 minutes. Add the tomatoes, salt and turmeric. Cook until the tomatoes soften.
Step 3Stir the tomato mixture into the dal. Reduce the heat to low and simmer for 10 minutes. Makes 3 1/4 cups.