Roast Pork With Gravy without back broth

1 lb pork tenderloin 1/2 red onion , halved and very thinly sliced 1/2 cup red wine vinegar 1/2 teaspoon salt , plus more for seasoning pepper , to taste 8[...]

2 (1 lb) pork tenderloin 1/2 cup dried cherries 1/3 cup dry red wine 1/4 cup balsamic vinegar 3/4 cup good-quality all-natural cranberry juice or 3/4 cup[...]

2 (16 ounce) cans jellied cranberry sauce 1/2 cup white sugar 1/2 cup cranberry juice 1 teaspoon mustard powder 1/4 teaspoon ground cloves 4 lbs boneless pork[...]