Pork Tenderloin without stems pancetta

1 tablespoon soy sauce 1 (6 ounce) can frozen orange juice concentrate, thawed 1/4 cup orange marmalade 3 tablespoons honey 1 tablespoon balsamic vinegar 1[...]

1 pork tenderloin salt and ground black pepper to taste 1 tablespoon olive oil 1 1/2 plums, pitted and chopped 2 tablespoons balsamic vinegar 1 tablespoon[...]