Boil the potatoes in water for 10 minutes. Drain and set aside.
Heat the oil and fry the cumin and chillies briefly.
Add the cauliflower florets along with the spice powders and saute for five minutes.
Add in the potatoes, and sprinkle in around 1/2 cup water. Add salt.
Cover and cook on simmer till done.
Serve hot garnished with coriander leaves.