I am not sure about how to make raw split mung beans at home. My mother in law prepares some split beans for me when I visit Sri Lanka & it is enough to cook for few months.
Anyway recently I bought a packet of split bean from a store & here is my recipe of how to cook it as a curry.Also check this recipe on split mung dhal snack.
Split mung beans 1 cup
1 onion sliced
1 tsp red chili powder
1 tsp curry powder
½ tsp fenugreek seed
¼ tsp turmeric powder
1 sprig curry leaves
Salt to taste
1 cup of thick coconut milk
Before cooking, heat a pan & roast dry split beans. Then add it into water & allow to soak for about 1 hr.
After soaking, wash split bean & drain from water. Add to the cooking pot.
Mix all ingredients above other than coconut milk.
Add about a cup of water & allow cooking. Add some more water if needed.
Once the split bean is cooked, add thick coconut milk.
Taste for salt.
Once coconut milk starts to boil, remove from the flame.
Serve with rice & other curries.