Green Masala for idli

On our recent trip to India, we tried the green masala idli at New Krishna Bhavan, Malleswaram, Bangalore.. It was unlike anything that i've ever had!!! And this coming from someone who would sprint a mile away at the sight of idlis... :) Here's an attempt to recreate that magical green sauce/chutney/curry!! :)

Ingredients (Serves 6):
1/2 bunch spinach
4-5 mint sprigs
9-10 coriander sprigs
1 green capsicum (Finely dice 1/4 of this, coarsely dice the remaining)
1 onion (Finely dice 1/4 of this, coarsely dice the remaining)
1/2 cup frozen peas
5-6 green chilli (add to suit your taste)
1 tsp Mustard seeds
1 tsp cumin seeds
1 tsp chilli powder
1/2 tsp turmeric
1 tsp garam masala powder
1 tsp coriander powder
1/2 tsp asafoetida
1/2 tsp fennel seeds
1 Tbsp Oil
Salt to taste
Water if needed

Method:
1) Heat 1/2 Tbsp oil in the frying pan. Add mustard seeds and wait for it to splutter
2) Add cumin seeds, fennel seeds, green chilli and coarsely chopped onion
3) Once onion begins to turn brown - Add chilli powder, garam masala powder, coriander powder, asafoetida.
4) Add coarsely chopped capsicum and peas - wait for 2-3 minutes.
5) Add spinach and mint leaves. Stir until it wilts.
6) Turn off the heat and add coriander leaves
7) Wait for it to cool - before grinding it into a smooth paste
8) Heat the remaining oil in the frying pan. Add the finely diced onion and capsicum. Fry for a minute.
9) Add the paste. Add water to get the desired consistency. (I added 1/2 a cup of water)
10) Add salt to suit your taste. Heat for a minute or two.
DONE!!!! :)

Goes well with idli, dosa, dhokla. :)