Old Fashioned Boston Baked Beans Serves 6 1/2 pound Red Heirloom Indian Beans 4 strips bacon, cut into 1/2-inch pieces 1 medium onion, finely chopped (or 1/2 cup chopped red spring onions) 2 cups chicken or vegetable broth (plus more if needed) 1/2 cup ketchup 1/4 cup molasses 2 tablespoons Maple syrup 1/4 cup firmly …