Trim all visible fat from lamb. Place lamb in a large shallow dish; set aside. Combine Burgundy and remaining ingredients except broth in container of an electric blender; cover and process until smooth. Pour marinade over lamb; cover and marinate in refrigerator for 8 hours, turning occasionally. Remove lamb from marinade, reserving marinade. Grill lamb over medium coals, 15 to 20 minutes on each side, or until meat thermometer registers 140 F. (rare) or 150 F. (medium rare), basting frequently with reserved marinade. Combine 3/4 cup remaining marinade and beef broth in a medium saucepan; cook over medium heat, stirring constantly, until mixture comes to a boil. Boil 1 minute. Serve with lamb. From _Gatherings_ by The Junior League of Milwaukee, WI. In _America's Best Recipes: A 1989 Hometown Collection_. Birmingham, AL: Oxmoor House, Inc., 1989. Pp. 190-191. ISBN 0-8487-0765-6. Electronic format by Cathy Harned.