Prepare rice in boiling salted water according to package instructions. In the meantime, peel the garlic and press it through a garlic press. Peel and wash the carrots and cut them into fine slices. Clean, wash and roughly dice the tomatoes.
Cut cabbage into slices. Cut leaves into pieces up to the stalk. Wash and drain carefully. Melt butter. Sauté garlic and carrots in it. Add the savoy cabbage, fry for another 5 minutes at low heat.
Season with salt and pepper. Add tomatoes and stock. Simmer covered for about 30 minutes. Season with salt and pepper.