Slow-Cooked Boston Baked Beans

Ingredients

• pound dried small white beans , such as navy beans
• tablespoon kosher salt plus more to taste
• Assorted peeled, halved, and trimmed aromatic vegetables , optional
• sprigs of a woodsy herb , optional
• bay leaf
• dark molasses
• teaspoons Dijon or brown mustard
• Freshly ground black pepper to taste
• pound salt pork or slab bacon, rinsed of excess salt if necessary and cut into 1
• large yellow onion, diced
• Apple cider vinegar, to taste