Check the beans for debris by pouring them onto a white plate.
Soak the beans overnight - 1 cup of beans to 4 cups of filtered water and 2 teaspoons of salt. (The water is filtered to remove minerals that might keep the beans from cooking evenly. The salt is added to season and to brine the beans so they hold their shape.)
Drain and rinse well, throwing away the water. Soaking and rinsing is done to remove as much of the gas causing quality of beans. There is conflicting evidence for this, but we have found it to be true.
Put the beans in the Instant Pot and add 4 cups filtered water and 2 teaspoons of salt. Use the pressure cooking setting on high to cook for 20 minutes. Let the pressure release naturally for 20 minutes before opening.