Pork Tenderloins with Blackberry Vinegar

Pat the tenderloins dry with paper towels and lightly salt and pepper them. Add pork to hot oil over medium heat; brown 4-5 minutes on each side. Remove pork from pan. Add shallots, tarragon, and wine; simmer for 3 minutes. Add vinegar and bring to a boil. Continue cooking and stirring until the mixture thickens. Stir in cream; return pork to pan. Heat for a minute, turning pork over to coat it. Add salt and pepper to taste.