Boston Baked Beans

INGREDIENTS

• 4 ounces salt pork, trimmed of rind and cut into ½-inch cubes
• 2 ounces bacon, cut into ¼-inch pieces
• 1 medium onion, finely chopped
• ½ cup + 1 tablespoon mild molasses, divided
• 1/3 cup light brown sugar
• 2 tablespoons brown mustard
• 1 pound dried small white beans (like great northern beans), rinsed and picked over
• 1¼ teaspoons salt
• 9 cups water
• 1 teaspoon apple cider vinegar
• Salt and pepper, to taste