Classic Boston Baked Beans

Soak beans in cold water to cover overnight in a large bowl. Drain in a colander.

Heat oven to 300 degrees. Arrange onions in the bottom of a bean pot or Dutch oven. Top, working in order, beginning with tomatoes, and continuing with bay leaves, dry mustard, cloves, brown sugar, and salt and pepper. Add soaked beans and pour over molasses. Top evenly with salt pork. Add 5 cups water and cover.

Transfer to oven and bake, without stirring, until the beans are tender and the liquid has thickened, about 6 hours. Check the beans every 45 minutes, adding hot water, if necessary, to keep beans slightly soupy at all times. Remove from oven, and adjust seasoning with salt and pepper, if necessary, before serving.