Rinse 1 pound dried split peas
Heat 1 tablespoon oil or butter in a large pot
Add 1 chopped onion, 2 chopped carrots, and 2 chopped celery stalks
Cook until softened
Add 2 minced garlic cloves
Stir for 1 minute
Add the split peas
Add 8 cups water or broth
Add 1 bay leaf
Add salt and black pepper
Add optional ham, bacon, or smoked turkey
Bring to a boil
Reduce to a simmer
Cover partially and cook for 60 to 90 minutes
Stir occasionally
Cook until the peas are soft and the soup is thick
Remove the bay leaf
Adjust seasoning
Add more broth or water if needed
Serve hot