Boiled rangoon na vaal
As the name suggests, this refers to the vaal that is boiled. You can use two cups of water per cup of vaal if cooking in a covered pot. Always put the cover on when cooking beans as it will reduce the cooking time to around 20-30 minutes, use less energy, and perhaps retain more vitamins. Bring the concoction to a boil, then turn the down the flame to medium-low. If it gets too thick, add more water. You can also pressure cook the soaked vaal with or without salt in boiling water for around 5 minutes to get boiled Rangoon vaal.
The beans are cooked when they burst and the water turns syrupy. At this point, you may add spices, vegetables or even boiled rice as per your preference and recipe requirements.
Parboiled rangoon na vaal
Parboiling is a cooking technique in which soaked vaal are partially cooked in boiling water for 3-5 minutes, but removed before it is cooked all the way through. Many recipes call for parboiled vaal, to ensure they get cooked well in the final dish along with the other ingredients.
Soaked rangoon na vaal
Clean, wash and soak Rangoon vaal in enough water overnight. Discard the water, wash the vaal, and use as required.