Ingredients:

Kumbalanga                         : 1/2 kg
Grated coconut                     : 2 cups
Green chillies                       : 4nos
Cumin seeds                         : 2 pinch

Pepper pdr                            : 1/4 tsp
Turmeric pdr                        : 1/4 tsp
Thick curd                            : 1 cup
Mustard seeds                      : 1 tsp
Red chillies                          : 2 spilt into 2
Fenugreek seeds                  : a pinch
Curry leaves                        : 1 sprig
Oil for seasoning
Salt to taste


Method:

Boil kumbalanga in 1 cup of water with  turmeric powder, salt and pepper powder till it becomes soft.
Grind grated coconut with green chillies and cumin seeds to a paste and add this to the cooked kumbalanga.
Whisk the curd  and add this to the curry. When it is about to boil remove from fire. (Do not allow this to boil after adding curd).
Heat 1 tbsp of oil in a kadai, add mustard seeds. When it splutters add red chillies and fenugreek seeds.  Finally add the curry leaves and pour this to the  curry.  Tasty Kaalan is ready!!

Variation:  You can use Yam or raw banana instead of Kumbalanga  and follow the same method.