Citrus Mint Pork Ribs

In a medium saucepan, combine cornstarch, brown sugar, mint and salt. Slowly add orange and lime juices and stir until mixture thickens. Remove from heat and stir in lime and lemon peel. Preheat grill and prepare for indirect grilling. Place ribs on grill over direct heat for one minute per side. Move to indirect heated area. Brush sauce on one side, close grill lid and cook for 20 minutes. Turn ribs and coat other side with sauce and continue grilling for 30 minutes. Reserve the remaining sauce to serve with the ribs.