Wash and peel the turnips.
Chop them up into medium-sized pieces. Keep them aside.
In a pressure cooker, heat 1 tablespoon of oil.
Keep the heat on medium. Add 1 teaspoon of cumin seeds and ginger-garlic paste. Fry them for about 30-40 seconds.
Add the chopped turnip. Add 1/2 tsp of turmeric powder and 1/2 teaspoon of salt.
Add water and pressure cook it till the turnip becomes tender.
While the turnip is cooking, heat 2 tablespoons of oil in a pan.
Add 1 teaspoon of cumin seeds and chopped garlic. On medium heat, fry them till the garlic changes its colour.
Add green chillies and asafoetida and fry for about 30 seconds.
Add chopped onions. Fry them on medium heat till they turn translucent.
Add chopped spring onions and fry them for about 2-3 minutes.
Now, add salt, ½ tsp turmeric powder, red chilli powder and coriander powder. Mix well.
Add tomato puree.
Add frozen peas.
Reduce the heat. Cover and cook until the tomato is fully cooked and some oil gets released. This can take about 5. Mix it occasionally with a spatula.
While this is cooking, open the pressure cooker.
Mash the turnips with a masher.
Once the tomatoes are cooked, add mashed turnip.
Add sugar, kasuri methi and garam masala.
Cover and cook for another 5 minutes.
Then add the juice of one lemon.
Taste and adjust the salt. Garnish with fresh coriander leaves and serve with rotis, paranthas or rice.