Recipe for an Easy to Cook Mutton and Potatoes Curry

Ingredients needed for Mutton and Potatoes curry 
1 kilo mutton
1 cup onion paste
3 tsp ginger garlic paste
1 cup tomato puree
2 tbsps oil
1 tsp turmeric powder
2 tbsp coriander powder
2 tsp cumin seeds powder
1 tsp garam masala powder
3 - 4 potatoes peeled and cut in to medium sized pieces

How to prepare Mutton and Potatoes Curry: 
Heat oil in a pressure pan, add the mutton pieces when it is hot .
Fry the pieces  on high heat till the mutton changes colour and the moisture is lost.
Simmer the flame and add onion paste, ginger garlic paste  as well as salt to taste.
Stir continuously and see that the masala does not burn. Continue stirring till the onion and garlic ginger pastes turn brown.
Add potato pieces  and mix well.
Then add the tomato puree and the mentioned spices. Continue to fry till all the masalas combine well together.
Sprinkle a little water and keep cooking o low flame for about 10 minutes.
Then add half a liter of water  with salt to taste. Since already the salt has ben added check out first and then add if needed for the gravy.
Pressure cook the meat for about 10 minutes on low flame  after the first whistle.
When the Pressure pan is cool , check for the consistency, adding more water. Bring it to boil and then serve hot.
Serve as a side dish with Rice and Rotis.