Wash the cauliflower stalks thoroughly and peel off any tough outer layers. Chop the stalks into small, bite-sized pieces.
In a pressure cooker, add the chopped stalks, and enough water to cover them. Cook for 2 whistles, then allow the pressure to release naturally.
Drain the boiled stalks and squeeze out excess water gently using your hands.
Heat oil in a pan on medium flame. Add cumin seeds and a pinch of asafoetida. Let the seeds splutter.
Add turmeric powder, red chili powder, coriander powder, garam masala, amchur powder, and cook for a few seconds.
Now add boiled potatoes, boiled cauliflower stalks, grated ginger, finely chopped green chilli, and salt.
Combine everything thoroughly and cook for 5-6 minutes, stirring occasionally.
Once the sabji is well-cooked, then turn off the flame. Garnish with freshly chopped coriander leaves.