In pot, add oil, cumin seeds and roast.
Add ginger garlic paste and fry
Add onion (make paste in grinder) and fry until translucent
Add salt, turmeric powder, red chili powder, garam masala, tomato (make paste in grinder) and cook until it leaves oil
Now add meatballs one by one and cook on low flame until it’s hard (DO NOT USE SPOON AT THIS STAGE) almost 5 minutes
Stir with pot handle (do not use spoon) and let it cook until it’s completely hard
Add potatoes, water (as much you want gravy) and cook on medium heat until potatoes are soft
Remove cover and cook for another 5 minutes
Garnish with coriander and garam masala