Clean, wash and cut the chard into strips. Drain the beans in a sieve. Peel onion and garlic, chop finely and fry in 1 tbsp. hot oil. Add tomatoes, 1⁄4 l water, broth and bay leaf, bring to the boil. Add beans and chard, simmer for about 5 minutes. Season to taste with vinegar, salt and pepper.
Fry the chorizo in 1 tablespoon of hot oil all around for about 5 minutes. Wash the herbs and chop roughly. Add the chorizo to the beans and sprinkle with herbs. Roast bread tastes good with it.