Pea Potato Soup

Recipe to prepare "Pea Potato Soup":

Ingredients:
1 tbsp refined oil
1 medium bulblet onion, finely sliced
1 medium potato, finely chopped
1 bowl green peas
1 tomato, finely chopped
salt to taste
1/4 tsp coriander powder
1 pinch garam masala
1/2 tsp blackpepper powder
2-3 cups water
butter, to serve

Method:
Heat oil in a pan.
Add 2 tbsp onion, and saute until pink.
Add 2 tbsp potato, and mix well.
Add green peas; toss and stir well to cook for around 1 minute.
Add tomato, and stir well.
Add salt, and mix well.
Add coriander powder and garam masala; mix well.
Add 1/4 tsp blackpepper powder, and mix it.
Add 1-2 cups water; stir and cover the pan to let it cook for around 2 minutes.
Uncover the pan, and stir once.
Let the soup cool to room temperature, and crush it in a mixer/grinder.
Transfer the paste in a pan; stir and cook again for a while.
Add 1/4 tsp blackpepper powder, and mix well.
Add 1 cup water, and stir well for a while.
Put off the flame, and serve it in a soup bowl, with butter as topping.