chopped tomatoes, rich in tomato juice, equivalent to 2 cans • medium-sized onions, finely diced • garlic, mashed • medium carrots, diced into small cubes • large potato, peeled and diced into small cubes • zucchini, diced • eggplants, diced • olive oil • vegetable broth cube, preferably knorr • lemon juice, equivalent to 1/2 squeezed lemon • pinch of all spice • black pepper •