In a medium stockpot, sauté onions in oil. Remove from heat and add split peas, chopped carrot, ham bone or chopped ham. Add enough water to cover ingredients, and season with salt and pepper. Cover and cook until there are no beans left, just a green liquid (this will take a couple of hours).
While soup is cooking, check to see if water has evaporated. You may need to add more water as the soup continues to cook.
Once the soup is a green liquid, remove from heat and let stand. The soup will thicken as it cools. Once thickened, you may need to heat through to serve. Water can be added at any time if you find the soup too thick.
Ingredients:
