Cuban Black Bean Soup

Ingredients

 * 4 quarts water (2 quarts for soaking, 2 for the soup)
 * 1½ cups black beans
 * 2 yellow onions, chopped
 * 1 cup chopped celery
 * 1 tsp crushed red pepper
 * 2 cloves garlic, crushed
 * a pinch oregano
 * 1 tbsp prepared mustard
 * 1 bunch chopped fresh parsley
 * salt and pepper, to taste

Directions

 * 1) Soak the beans in 2 quarts of water overnight, then drain.
 * 2) Add the fresh water to the beans in a large pot.
 * 3) Simmer for about 5 hours.
 * 4) Add the remaining ingredients.
 * 5) Simmer for another 2 hours.