Baked Beans

1 pound dried small white beans such as navy beans
Kosher salt
Freshly ground black pepper
1 yellow onion
1 carrot, halved
2 cloves garlic
2 sprigs of a woodsy herb (such as rosemary, sage, and/or thyme)
1 bay leaf
1/2 cup dark molasses (not blackstrap)
2 teaspoons Dijon or brown mustard
1/2 pound slab bacon, cut into 1/2-inch chunks
Apple cider vinegar, to taste (optional)
Last attempt:
soak: 12h cold, 1/2T salt
cook: 7.5 hrs, 250*F, water added 4 times. 3 fingers of salt added.
reheat next day for an hour in 200-400*F oven, ended up too mushy, salt level good and undetectable
try shorter soak next time, 4-6 hr.