Combining: Place split peas, sausages, potatoes, carrot, celery, cilantro, culantro, onion, allspice, and a teaspoon of salt in the pot (or pressure cooker or crock pot).Add boiling-hot water.
Cooking in a normal (3 quart [3 lt]) pot
Cooking: Cook over medium heat until all the ingredients are cooked through and the peas have dissolved completely (25-30 minutes). Stir regularly to avoid sticking.
Cooking in a pressure cooker
Cooking: Cook for 15 minutes counting from the time the pressure valve starts whistling. Open pressure cooker (after cooling, according to the manufacturer manual) and check that the peas have dissolved completely. Cook for another 5 minutes if necessary.
Cooking in a crockpot
Cooking: Cook for 4 hours over medium heat, or 7 hours over low heat.
Serving: To finish (regardless of cooking method), remove allspice berries, drizzle with olive oil, and season with salt and pepper to taste. It goes great with some rustic bread.
Vegan green split peas soup
To make it a vegan dish just skip the sausage, the peas in themselves contain a lot of protein.