Add onion,green chillies, tomatoes in a mixter,make a paste.

Peet and cut the potatoes.

Add oil in a cooker,add cumin seeds when crackle add tomato paste and saute it.

Add coriander powder,red chilli, kashimiri red chilli powder, turmeric and saute for 2-3 minutes.

When leave the oil add potatoes and water,take 2-3 whistles.

Now add garam masala.

Garnish with green coriander.