Peel skin of potato, carrot and beetroot. Cut into medium sized cubes.
In a pressure cooker, heat oil and add cumin seeds, fennel seeds and asafoetida. Once it sizzles, add onion, ginger, garlic, green chillies and curry leaves.
Fry the onions till they turn light golden brown color. Then add tomato paste and fry well for 4-5 minutes or until oil separates.
Add turmeric powder, coriander powder, red chilly powder, garam masala and fry for 1-2 minutes.
Add potato, carrot, beetroot and mix well. Fry for 3-4 minutes. Add coconut milk, 1 ½ cup water, half of the coriander leaves, salt and mix well.
Close lid and pressure cook for 3 whistles. Once the pressure subsides, open and add remaining coriander leaves.