To begin making the Bengali Lau Die Tetor Dal Recipe, first wash and soak the moong dal in water for 10 to 15 minutes.

Cook the dal in pressure cooker along with 2-1/2 cups of water, bottle gourd, salt, sugar, ginger, green chilies, and turmeric powder for 3 whistles and turn off the heat. Allow the pressure to release naturally. 

Click to see how to cook lentils in pressure cooker. 

While dal is cooking in the pressure cooker, peel and cut the bitter gourd horizontally into rounds. Wash well and sprinkle a teaspoon of salt over the bitter gourd slices. Set aside for few minutes or till bitter gourd slices shed excess water.

Heat 2 tablespoons of mustard oil in a saucepan over medium heat. Add the cumin seeds, green chillies, and saute for a few seconds.

Add the karela pieces in the oil and stir fry the karela until it is cooked through. Turn off the heat and set aside.

Open the lid of the pressure cooker and add water to adjust the consistency of the dal.

Add the cooked dal to the bitter gourd and give it a stir. Check the salt and adjust to taste accordingly.

Give the Lau Die Tetor Dal a brisk boil for about a minute and turn off the heat. Transfer the Lau Die Tetor Dal  to a serving bowl and serve hot.

Serve Bengali Lau die Tetor Dal with Steamed Rice and Aloo Parwal Sabzi for a delicious Bengali style lunch.