Pork with caramel

1 tablespoon balsamic vinegar 7 tablespoons olive oil 1 small shallot , minced 4 pork loin chops, bone-in (about 1 inch thick) 2 small peaches, halved &[...]

3/4 lb pork tenderloin - (to 1 lb) 2 Tbsp. butter divided 2 med onions sliced 1/2 tsp salt 1/4 tsp Freshly-grnd black pepper 2 Tbsp. sugar 1/4 c. port wine or[...]