Dice all vegetables in inch long pieces. wash & keep aside in water as raw banana turns black when in direct contact with air.
Heat Oil in wok/pan. Add panch phoron. As soon as it splutters, add ginger paste. After a minute, add cumin powder. Add all vegetables, stir for 5 minutes. Add salt to taste & poppy seed paste. Stir and pour water. Bring to boil, sim and cover the pan slightly.
Keep stirring & checking in between for vegetables to be cooked completely. As soon as the vegetables are done(test by taking a piece each and mash/slice with spoon wihtout any difficulty), add sugar. The gravy should not be very thick. Remove from gas oven and serve with rice(brown).