Empty 1 lb package of dried beans into the Instant Pot container and check carefully for any debris or stones.
Add three times as much water as beans (about 3 cups water for 1 cup beans) and let soak overnight or for at least 3 hours.
After soaking, drain and rinse the beans well under cold water.
Place the rinsed beans back in the Instant Pot with 7 to 8 cups of fresh water, depending on how much broth you want.
Add Bragg's Liquid Aminos or salt to taste, then stir.
Add celery, onions, garlic, and a bay leaf if desired.
Secure the lid and set to cook on high pressure, normal mode.
Cooking time varies by bean type: lima beans take about 6 minutes, while black beans take up to 20 minutes.
Once cooking finishes, allow the pressure valve to open naturally rather than quick-releasing.
For a richer, thicker broth, keep the pot on warm mode and let it continue cooking for 2 to 4 hours..