Rinse beans, place in pot, add 8-10 cups water and bring to a boil. You can soak beans overnight for shorter cooking time.
When beans start boiling, turn heat down to medium or low enough to keep beans at a slow steady boil. Add onions, bell pepper, garlic and celery. Cover and cook until beans start to get tender. You may need to add more water during cooking to keep enough liquid in beans.
Once beans start getting tender, add sausage, parsley, liquid seafood boil, beef bouillion cubes, cayenne pepper and seasonings to taste. Then continue cooking until beans are tender or mash very easily with fork.
Serve over hot cooked rice with slices of raw onion.