Pork Tenderloin

Step 1
Marinate the pork: Whisk sherry, soy sauce, garlic, and ginger together in a large glass baking dish.

Step 2
Rub pork with mustard powder and thyme, then transfer to the bowl with marinade. Turn pork until well coated. Cover and refrigerate for 8 hours to overnight.

Step 3
When ready to cook the pork, preheat the oven to 325 degrees F (165 degrees C). Remove pork from the refrigerator and uncover; leave marinade in the dish.

Step 4
Bake in the preheated oven, basting occasionally with the marinade, until pork is slightly pink in the center, 60 to 65 minutes. An instant-read thermometer inserted into the center should read at least 145 degrees F (63 degrees C).

Step 5
When the pork is almost finished, make the sauce: Heat apple jelly in a small saucepan over medium heat until warm. Stir in sherry and soy sauce, reduce the heat to low, and simmer gently until pork is ready.

Step 6
Slice pork tenderloin and serve warm apple jelly sauce over top.