Allow pressure to naturally release until pressure subsides, or at least 20 minutes before doing a quick release of the remaining pressure.
Once beans have finished cooking, stir in salt and vinegar if using. Store cooked beans in a bit of the cooking liquid to keep them moist and tender while they sit in fridge, this is not necessary, but suggested.
Video
Notes
***Old dried beans may take longer to cook and never fully soften.*** It is best to use dried beans within 6 months of purchasing and ALWAYS check the expiration date--even recently purchased beans may have been in storage for a while.Incredibly soft beans without much structure left, add 10 minutes to cook time.
For pre-soaked beans, decrease cook time by 10 minutes and decrease the water to 5 cups.
For every additional pound of dried beans, add 2 cups of water for pressure cooking.
Note on Navy Beans: Navy beans can get mushy if not pre-soaked. So if preparing them for baked beans or something you want to hold its shape, it is best to soak them for 8-12 hours in cold water and then drain and cook for 15 minutes on high pressure with natural pressure release.