Peel and cut turnip in pieces and put in water. Water will wash them away and also prevent them from fainting.
Heat oil in pressure cooker.
Add tomatoes, onion, green chilies, garlic and ginger, cumin seeds, kashmiri Red chilli powder, turmeric powder, coriander powder and garam masala.
Also add turnip and water.
Put a lid and pressure cook for 5-6 whistles.
When the pressure releases on its own, open the lid and mash the turnip while keep cooking on low heat. This time there's ample of water in them.
After couple of minutes, the water will evaporate. Keep cooking while stirring.
Turnip will begin to stick very gently to the base of the pressure cooker. Let turnip roast like this.
Keep cooking and keep scraping.
Roast turpin for 8-10 minutes but make sure it shouldn't get burnt.
Shalgam ki sabzi is ready. Serve hot after sprinkling roasted cumin powder over the top.