Yam / Chena Theeyal, a traditional Kerala Curry Recipe

Ingredients needed for Chena / Yam Theeyal
1 cup of cubed yam / chena pieces
6 green chillies  slit
1/4 cup small onions sliced
2 tsps coconut oil
2 tbsps tamarind paste
salt to taste
1 pinch of grated jaggery
1 cup grated coconut
6 small onions
1 1/2 tsps chilli powder
1 tsp Dhaniya powder
curry leaves
1 tsp ghee
1/4 tsp mustard seeds
curry leaves and 2 broken red chillis

How to prepare Chena Theeyal?
Heat 2 tsps of coconut oil, saute the chopped onions and slit green chillies.
Add the chena pieces, mix well for a minute. Add water, salt to taste and cook well.
In a fry pan heat a little oil, add the fresh grated coconut and small onions rill they are golden coloured. Add curry leaves, chilli powder, coriander powder, mix well.  Fry till the raw smell goes and remove.
Grind the masala to a paste.
Add the tamarind paste to the cooked yam pieces. Let it boil and simmer for a minute.
Add ground coconut paste  and bring the gravy to the right consistency as per your taste, by adding water.
Check for salt.
As the gravy starts boiling , remove from fire. Temper with ghee, mustard, red chilli and curry leaves. pourover the Theeyal and serve hot with plain rice.