Drain the lentils, and cut the pumpkin flesh into thick slices.
In a medium-sized flameproof casserole, cook quartered onions, strips of khlii, fat from khlii, sweet and hot red peppers, cumin, and salt to taste, and cook until onion is transparent. Then add thinly sliced hot green pepper, tomato and tomato concentrate (purée). Add water to cover