For preparing Kootu curry, first cook channa with required salt and keep aside.
Grind together coconut, Cumin seeds and pepper corns. Keep this aside.
In a vessel cook yam, ash gourd with chilly powder, turmeric powder and salt.
When the vegetables are done, add the ground paste of coconut and cook for 5 minutes more.
In a pan, add little oil. Fry mustard, curry leaves and grated coconut.
Fry till coconut becomes dark brown in color.
Now mix together Channa, cooked vegetables and grated coconut well.
At last point add little sugar and remove from flame.
Kadala and chena kootu curry is ready.