Slice nectarines. Set aside 1 cup slices. In a blender or food processor, whirl until smooth remainder of the nectarines with vinegar, tomato paste, sugar, worcestershire sauce, garlic and hot sauce. Stir in orange peel. Remove about 1/3 cup sauce to baste over flank steak or other beef steak for last few minutes barbecuing. Add remaining nectarine slices to remaining sauce and pass with beef. | 
