Wash the beans and soak in water with the green pepper halves. When the
beans swell, cook in the same water until tender.
Heat the oil in a frying pan and add onion, garlic. Add 1 cup of the beans to
the pan and mash. Add this to the remaining beans together with the salt,
pepper, oregano, bay leaf and sugar. Allow to boil for an hour, add the
vinegar and wine and cook slowly for another hour. If there is still too much
liquid, cook uncovered for a while. Add 2 tbs. of oil just before serving