Wash hands with soap and water.
Rinse or scrub fresh vegetables under running water before preparing.
In a large saucepan, sauté carrot, onion and celery in oil until just beginning to brown.
Add split peas and broth. Bring to a boil. Cover pan and reduce heat to low.
Simmer until peas are as soft as you like, 45 to 60 minutes or longer.
Refrigerate or freeze leftovers within 2 hours.
