Preheat oven to 350 degrees F.
Rub tenderloin with salt and freshly cracked black pepper and sear in hot pan with olive oil. When browned on all sides, remove to a small ovenproof dish (set the pan aside off the heat for the sauce) and roast tenderloin until a thermometer reaches 145 (pink in the middle) to 160 degrees in the thickest part, about 25 minutes or so for pork cooked as shown in the photos. Remove and tent with foil for 10 minutes.
After the tenderloin is in the oven for about 15 minutes, in the pan you seared the tenderloin in, add 2 cups of chicken broth, the jelly, and the red wine vinegar. Bring to a boil and reduce to about one cup. Taste, stir in cracked pepper as desired. (If serving children, keep the heat level in mind when you add that pepper.) Stir in the cornstarch mixture and simmer a few minutes to thicken. Taste and add salt if desired. Keep warm.
Slice tenderloin thinly on the diagonal. Mix any accumulated juices into the sauce. When serving, serve three to four slices per person, drizzle a bit of sauce over each portion and pass the rest of the sauce.
Notes: The best results will come from using a home-made or really good quality chicken stock and the currant jelly, which is not as sweet as most jams/jellys. Substitutions can be made, but try to stay with a good quality dark jelly or the sauce will be overly sweet.
Nutrition, Per Serving: 229 Calories; 10g Fat (39.7% calories from fat); 26g Protein; 8g Carbohydrate; 1g Dietary Fiber; 74mg Cholesterol; 366mg Sodium. Exchanges: 0 Grain(Starch); 3 1/2 Lean Meat; 1 Fat; 1/2 Other Carbohydrates.