Savoy cabbage clean, wash, quarter and cut from the stalk. Chop the savoy cabbage roughly. Peel and chop the onion. Peel and wash potatoes and cut them into large pieces.
Heat 1 tablespoon of butter in a large saucepan. Sauté the onion and savoy cabbage for about 5 minutes while stirring. Add potatoes and 1 l water. Season with salt and caraway. Bring everything to the boil, cover and simmer for about 15 minutes.
In the meantime, dice the bread and heat 1 tablespoon of butter in a pan. Roast the bread for about 5 minutes while turning. Season with salt.
Wash the herbs, shake them dry, pluck them and chop or cut them finely. Clean the chillies, cut lengthwise, remove seeds, wash and cut into very fine rings.
Finely puree the soup with a hand blender. Grate the cheese finely and melt in the soup. Add chilli and cream, simmer for 2-3 minutes. Season to taste with salt. Serve the soup and sprinkle with herbs and croutons.