Bring to the boil then turn off the heat. Transfer the mixture to a medium slow-cooker pot. Cover and cook on a low setting for 8–9 hours. Stir in the milk and cook for 30 minutes before serving.
Nigerian obe ata, aka stew, can be used as the foundation for building various dishes beyond Nigeria's borders. Here, fresh tomatoes are swapped for tomato paste, and peppers are oven-roasted ...