Add the beans to a mesh strainer. Rinse under cold water for 1 minute. Allow to drain.
Add avocado oil to the bottom of the instant pot on high sear/sauté.
Add sausages, peppers, celery, onions and garlic. Sauté for 5 minutes (the onions will be translucent and the sausages will be browned). Turn off the sear-saute function on the instant pot.
Add the beans, water, bouillon, and bay leaves. Stir to combine.
Cover the instant pot with the pressure cooker lid. Set the lid to “seal”.
Turn on high pressure for 40 minutes.
At the end of the cooking time, allow the soup to stay with the lid on for 20 minutes before manually removing the remaining pressure (I find that this is the best way to ensure that all of the beans are tender). Remove the lid.
Stir, add seasonings, salt and pepper to taste.
Remove the bay leaves before serving.