Drain the beans and rinse with water. Roast pepper, coriander, mustard and cumin in a pan without oil until the spices start to smell intensely. Now grind the spices with a mortar or food processor.
Put olive oil in a small pan and fry the coarsely chopped garlic and the crumbled chili pepper over a mild heat until they are lightly brown. Add the contents of the pan and the lemon juice to the beans and puree. When pureeing, add broth until the desired consistency is achieved. Stir in the remaining ingredients and the spices and season to taste with salt, pepper, lemon juice and sugar.
Tastes good with toasted bread, with meat or as a spread for fajitas or tortillas.