Start by washing the moong beans and the red lentils together. Place them into a pot with the water, add salt and turmeric and mix it well. Bring the water to a boil with a lid on the pot. 1: In the meantime, you can wash the tomatoes and cut them into small pieces. Check whether the water is boiling – it may push the lid off your pot otherwise! When the water is boiling, turn down the stove to medium heat and let it boil for the next half an hour. Stir from time to time. 2: After half an hour, your lentils and beans should be nicely cooked. You can turn off the stove and place them aside. 3: Heat up the oil in a deep pan. When it is hot, add cumin and asafetida into the oil and stir. Let them get fried and develop their aroma. When the cumin is dark brown, you can add the tomato pieces into the pan. Stir so that the spices get mixed with the tomato and get warm and soft. 4: When the tomatoes are mashed, you can add the sauce into your dal and stir well. 5: Serve it with rice and a vegetable dish – yummy! 6: Enjoy!