1 1/2 cup dried brown beans
2-3 tbsp syrup (molasses)
2 tbsp vinegar
1/2-1 tbsp potato flour
1. Rinse the brown beans and soak them in cold water overnight.
2. Let them simmer, well covered by water (add some salt), until they are (very) soft. This normally takes 11/2 hours. Check now and then and add more water if required.
3. Add the syrup vinegar, then the potato flour suspended in a small quantity of cold water as a thickener.
4. Heat briefly.