Black-eyed peas are a favorite ingredient in all of the regions of West Africa. There, traditional soups are rather plain, so to add cornmon greens, and/or okra to this soup would be considered quite "fancy" by most West Africans. And if you add the quantity of cayenne that most West Africans would, this soup would be considered insanely fiery by the majority of North Americans! Try varying the combination of vegetables a bit, playing with the quantities of the optional ingredients, or doubling the amount of greens. Reduce the water and you'll have a stew, delicious served on polenta or grits. Top each bowl with chopped scallions or more chopped cilantro.