Instructions

1. 1
   Wash beans and let hydrate overnight by covering with twice its volume of water.
2. 2
   The next day, remove any floating beans.
3. 3
   Heat the oil in a pressure cooker. Add scallions and let fry until they start to brown. Add tomato, cumin, broth cube, and allspice. This is called "hogao", a basic sauce for many Colombian dishes.
4. 4
   Add 6 cups water, the beans, and plantain. Bring to a boil over medium heat.
5. 5
   Cover the pressure cooker, and let cook for 30 minutes.
6. 6
   Let cool, then open the pressure cooker.
7. 7
   Check water level, add the meat if using, and cover again. Cook for another 30 minutes.
8. 8
   Taste for salt. If you want a thicker mixture, you can cook uncovered over low heat.