Cover the beans in water and soak them over night. In the morning, strain the beans out of their soaking water and five them a good rinse. No nutrients are lost in the soaking ans rinsing: instead, the beans rehydrate, which will speed up their cooking time,
Toss the beans into a saucepan and cover them with cold water. Bring to a boil and then reduce the heat and simmer covered until the beans are tender, about an hour or so.
Drain the beans and place them in a 4 quart ovenproof baking dish with a tight fitting lid. add the water, maple syrup, bacon, onions, ginger mustard and Worcestershire sauce and salt and pepper. Add as much or as little of the reserved bacon fat as you care to.
Cover and place in the oven at 250 degrees and bake until the beans have absorbed most of the liquid and are tender---about 3 hours or so. Feel free to add a bit more water if the beans seem dry
Stir in vinegar just before serving