Green Peas songa with ground masala

Green Peas songa with ground masala 
Green Peas   - 1 cup
Potatoes- 2 small, peeled n chopped to 2 inch piece's  
To grind 
 Roasted dry red chilly - 3 short n 6 long 
Coriander seeds -2 tsp ( not roasted )
 Tamarind - Tamarind seed size 
Salt to taste
Seasoning 
Oil - 3 tsp
Onion - 2  chopped 
Tomato..1 chopped 
Method 
Pressure cook green peas  along with chopped potatoes for 1 whistle ( dont discard the water ) 

Grind  red chillies , coriander seeds n tamarind to a very fine paste .
In a kadai add oil , chopped onions and fry till reddish brown  ,Add chopped tomato n cook till mushy , then  add the ground paste and fry till the  raw smell goes ,add salt ,the  boiled stuffs n cook  for few  minutes .