London Broil with Cherry-Balsamic Sauce

Whisk wine, vinegar, cherry preserves, garlic, salt and pepper in a small bowl. Place meat in a shallow glass dish. Pour the marinade over the meat and turn to coat. Cover and marinate in the refrigerator, turning several times, for at least 20 minutes or up to 8 hours. Remove the meat from the marinade. Pour the marinade into a small saucepan; add shallot and set aside. Brush a ridged grill pan (see Tip) or heavy skillet with oil; heat over medium-high heat. Add the meat and cook for 10 to 12 minutes per side for medium-rare, depending on thickness, or until it reaches desired doneness. (It may appear that the meat is burning but don't worry, it will form a pleasant crust.) Transfer the meat to a cutting board; let rest for 5 minutes. While the meat is cooking, bring the marinade to a boil; cook over medium-high heat for 5 to 7 minutes, or until it is reduced to about 1/2 cup. Remove from the heat; add butter and whisk until melted. Slice the meat thinly against the grain. Add any juices on the cutting board to the sauce. Serve the meat with the sauce.