The night before, place beans in large pot and cover beans by at least 3 to 4 inches of cold water
When you are ready to cook, drain and rinse beans and set aside
Saute the green pepper and onion in olive oil until onion turns translucent.
Add garlic, spices, and cilantro and continue cooking for about 2 minutes
Add vinegar and sugar, and stir to combine
Add beans and 3 cups of water.
Place lid on pressure cooker, set pressure to high, and cook for 25 minutes (if using electric stove, cook on high heat until pressure/steam is observed, then move to another burner with lower heat while maintaining pressure, which is reflected by continued steam).
After 25 minutes has passed, turn off heat (if electric stove, move to cool burner) and allow the pressure to reduce naturally (ie, without using pressure release, pressure will decline as the food cools)