Clean and wash the white cabbage and leek. Cut cabbage into strips, leek into rings. Wash, clean and slice the tomatoes. Peel and finely dice onion
Heat the oil in a large pot. Steam onion, cabbage and leek for about 5 minutes while turning. Add tomatoes and caraway. Add 1/8-1/4 l water, bring to the boil and stir in the stock. Cover and simmer for about 10 minutes. Season to taste with pepper and a little salt
Dice bread. Grate cheese. Put the vegetables with the broth in an ovenproof dish. Spread bread cubes on top. Sprinkle with cheese
Bake in the preheated oven (electric oven: 200 °C / convection oven: 175 °C / gas oven: level 3) for 15-20 minutes until golden brown
Drink: mineral water