Beans are washed, cleaned and pour cold water. Once boiled, drained the first water and pours new hot water. Add the onion, carrots and chervil, chopped. Everything is cooked to readiness of beans if the water boil off, make hot water and cooking continues. Cooked beans to the previously boiled cabbage, cut into very small. Once boiled, add roux made from the butter (or vegetable oil), flour, onion, red pepper and tomato paste. Add to the dish and simmer for 10-15 minutes. The broth is served hot without additional spices.