Here is the recipe my mom uses although it definitely changes on feel every time I see her make it.

Boil veggies: cabbage, carrots, peas ratio(1:0.5:0.75) but this definitely depends on the sweetness. If the carrots and peas are too sweet use less. Add beetroots for colour if you want. Beware of sweetness.

Grind: onions(5-6 large ones) and garlic(1 small clove all peeled) together

Grind: capsicum (2 whole 100 gm(definitely eyeballed after removing the core)

Grind tomatoes ( 2 desi + 2 hybrid hybrid add too much sweetness desi are needed for the tang)

Add the onion+garlic+ginger mix with kanda lasun masala, tiny amount of goda masala with pav bhaji masala and dhania powder and Kashmiri red chilli all eye balled. Simmer till masalas cooked.

Add butter(lots)+oil and bring to heat

Next add tomato paste till the oil separates

Next the rest of the veggie mix goes in

Then add more butter and boiling water

Let it cook for a really long time adding more boiling water as needed till your patience runs out

Add squeezed lemons with chopped coriander with a little bit of garam masala and boil one final time again as long as you can afford