Heat oil in a pan. Splutter cumin seeds in it.
Add onion and saute till it turns translucent.
Add ginger-garlic paste and stir for few seconds.
Add chilli powder, coriander powder, turmeric powder, salt and mix well.
Add sliced tomatoes and stir till the tomatoes turn soft.
Add some water to form a nice gravy.
Add in washed and drained cauliflower florets.
Add green peas and some salt as required.
Cover and cook for 10 minutes on a medium flame.
Take another vessel and boil 2 cups of milk. Add 1 tsp vinegar diluted with little water. Strain the curdle and pour it into the curry.
Transfer the contents to a serving bowl.
Garnish with chopped coriander leaves and serve.