Step 1: Place the dried beans into a Dutch oven with 6 cups (1.5 L) of water. Soak overnight.

Step 2: Drain and pour beans back into the pot with enough water to cover the beans by a couple of inches, cook for 30 minutes until they are tender but still firm. Drain beans, making sure to reserve cooking liquid, set aside.

Step 3: Preheat the oven to 325 °F (160 °C). While the oven is preheating, cook pork over medium-high heat in the Dutch Oven until fat is rendered and pork is beginning to brown, then add the onion cooking until tender.

Step 4: Add the beans back to the pot, along with molasses, brown sugar, apple cider vinegar, ground mustard, salt and pepper and 3 cups (750 mL) of reserved bean water.

Step 5: Bake uncovered for 3 to 5 hours until the beans are tender, and the sauce has thickened, and the edges of the pot get sticky.

Step 6: (Note: if beans get dry, add another cup of water.)