Check the beans for debris, and rinse in several changes of water.
Saute aromatic vegetables in olive oil.
Add the dried beans and enough liquid to cover by about 2 inches.
Bring the pot to a rapidboil for 10 to 15 minutes.
Lower the heat to a gentle simmer until the beans are done, between 1 hour and 3 hours.
Salt when the beans are just starting to turn soft.