Medaillons de porc aux pommes (pork tenderloin with apples)

For ➍
500 g pork tenderloin, fat trimmed
2 tbs apple cider vinegar
¾ ts rubbed sage (or dried thyme or rosemary)
½ ts salt
¼ ts ground black pepper
1 tbs butter
1 tbs light olive oil
1 large onion, cut into medium strips
2 apples, peeled, cored, cut into wedges
pinch of ground cloves

Slice the pork crosswise into 4 medallions. Place the pork medallions in a small dish and pour the apple cider vinegar over the meat. Allow the pork to marinate in the vinegar for 10 m, turning the meat over halfway through the marinating time.
Pat the pork dry on both sides and sprinkle all the surfaces with the sage, salt and black pepper. Heat the butter and oil together in a large skillet set over high heat. Add the medallions to the pan and allow them to cook, without moving them at all, for 4 m. Carefully flip them over, and allow them to cook, without moving them, for an additional 4 m.
Check the pork medallions for doneness, and continue cooking them for an additional 1 to 2 m if they appear too pink in the center. Remove the cooked pork medallions to a plate and cover them loosely with foil to keep them warm.
Add the onions to the skillet and reduce the heat to medium. Cook the onions, stirring frequently, for 5 m, until they begin to brown. Add the apples and cloves to the skillet and continue cooking the mixture, stirring occasionally, for an additional 5 m, until the apples have just turned tender.

Arrange the onions and apples on serving plates, slice the pork, if desired, and arrange the pork over the caramelized onions and apples. Serve immediately.