Boneless, skinless chicken breasts (I separate them and trim off any fat)
1 lg. can whole pineapple (in light juice)
White cooking wine
Soy sauce

Drain pineapple juice, add equal amount of wine and slightly less of soy sauce. Marinate chicken breasts in the above mixture for several hours or overnight. Stir periodically. Grill approximately 5 minutes on each side or until chicken is done. Grill pineapple rings and serve on top of chicken.