From: This one came straight from my husband's brain. It's a Costa Rican recipe and it make me feel like I'm home no matter where I am.
1Tbsp of salt
1/2 onion skewered
16 oz dry black beans
Put all the ingredients in the crock pot and fill the pot one inch below top of slow cooker. Cook until the beans are soft (overnight on low, or on high if you can observe it and test the beans after several hours).