Boil the vermicelli in a bowl of water till they are soft. Don't overcook them.
Strain with help of colander or strainer and cool it under running water. Add salt and a tsp oil while boiling.
Boil green peas separately for 10 minutes simultaneously.
Heat oil in a pan or kadai. Put cumin seeds, asafoetida. once cumin seeds splutter add ginger garlic green chillies and saute for a minute. Add chopped onion and saute till translucent. Add tomatoes and cook for 2 minutes till they are soft.
Add boiled green peas to the pan and saute for another minute.
Add all spices, salt and mix well. Saute for a minute.