Boston Baked Beans - cooking recipe

Ingredients

4 ounces salt pork, trimmed of rind and cut into 1/2 pieces 2 ounces bacon, cut into 1/4 pieces (about 2 slices)
1 medium onion, chopped fine
1/2 cup mild molasses, plus
1 tablespoon mild molasses
1 1/2 tablespoons brown mustard
1 lb small dried white bean, rinsed and picked over (but NOT SOAKED or boiled at all... just dry beans)
9 cups water
salt
1 teaspoon cider vinegar
ground black pepper

Preparation

Adjust oven rack to lower-middle position; heat oven to 300 degrees.
Add salt pork and bacon to 8-quart Dutch oven; cook over medium heat, stirring occasionally, until lightly browned and most fat is rendered, about 7 minutes.
Add onion and continue to cook stirring occasionally, until onion is softened, about 8 minutes.
Add 1/2 cup molasses, mustard, beans, 1 1/4 teaspoons salt, and 9 cups water; increase heat to medium-high and bring to boil; cover pot and set in oven.
Bake until beans are tender, about 4 hours, stirring once after 2 hours.
Remove lid and continue to bake until liquid has thickened to syrupy consistency, 1 to 1 1/2 hours longer.
Remove beans from oven; stir in remaining tablespoon of molasses, vinegar, and additional salt and pepper to taste.