In a bowl, combine all the ingredients except the pork and cooking fat; season to taste.
2 garlic cloves, 1 shallot, 1 tbsp. fresh thyme, ½ cup pork or beef stock, ¼ cup pure maple syrup, ¼ cup balsamic vinegar, 2 tbsp. Dijon mustard, ¼ cup olive oil, Sea salt and freshly ground black pepper
Place the pork tenderloins in a marinating container and season to taste.
2 pork tenderloins, Sea salt and freshly ground black pepper
Pour the maple-balsamic vinegar mixture over the pork, cover, and marinate for 4 to 12 hours in the refrigerator.
Preheat oven to 425 F.
Remove the tenderloins from the marinade and pour the remaining juice into a separate saucepan.
Heat cooking fat in a skillet over high heat.
Cooking fat
Brown the tenderloin on all sides for 2 to 3 minutes.
Place the tenderloins in a baking dish, and bake for 35 to 40 minutes until done.
Bring the remaining marinade to a boil, and simmer for 10 to 12 minutes or until the sauce thickens (you may want to add more stock if there’s not enough marinade).
Serve the tenderloin with the sauce drizzled on top.