Soak the beans in cold water overnight. Pour the beans into a sieve and rinse with cold water. Put them into a large pot, fill up with water and bring to the boil. Skim off any foam with a skimmer. Peel garlic, cut into fine cubes and add to the beans.
Simmer the beans for about 1 hour until they are soft. Wash sage, shake dry and pluck leaves from the stems. About 15 minutes before the end of the cooking time season the beans with salt and pepper and add half of the sage. Heat the oil in a pot. Prick the sausages several times with a fork and fry them in hot oil all around for about 5 minutes until brown. Add the remaining sage and fry for about 1 minute. Take out some sage to garnish. Add the tomatoes, chop a little and simmer covered for about 10 minutes. Drain the beans, put them into the sausage pot and continue cooking for 5 minutes. Season to taste with salt, pepper and a little sugar.
Add the remaining sage and fry for about 1 minute. Take out some sage to garnish. Add the tomatoes, chop a little and simmer covered for about 10 minutes. Drain the beans, put them into the sausage pot and continue cooking for 5 minutes. Season to taste with salt, pepper and a little sugar. Garnish with sage. Serve with baguette or ciabatta
12 hours waiting time