First of all add onion, tomatoes, green chilies, ginger, garlic and just 1-2 tbsp of water in a grinder jar.
Grind to a fine puree.
Heat oil in a pan. As we have used mustard oil so it needs to be smoked first. You can add any oil you use in your daily cooking.
Add the onion tomato paste, cumin seeds, turmeric powder, spicy red chilli powder, kashmiri red chili powder, coriander powder, salt and mix.
Put a lid and let the ingredients cook on low heat. Keep stirring at intervals.
When the bubbles are seen, puree turns dry and begins to leave the sides of the pan, add frozen peas and boiled potatoes. Mix well.
Add boiling hot water nad mix it well.
Mash few of the potatoes and peas so that gravy tuns slightly thick.
Lastly add garam masala, Kasuri methi & coriander leaves. Mix.
Green peas and potato curry/Aloo matar ki sabji is ready.
Enjoy.