3 cloves garlic, minced
1/2 c. onion, minced
1/2 tsp. ground ginger
1/4 c. + 2 tbsp. white wine vinegar
2 tsp. olive oil
2 tbsp. frozen apple juice concentrate, undiluted
4 (4 oz.) chicken breast halves, skinned and boned
Vegetable cooking spray
4 (2 oz.) whole wheat rolls, split
1 c. loosely packed, sliced fresh spinach
8 slices tomato

Combine first six ingredients in a large Ziploc plastic bag. Add chicken. Seal bag. Marinate in refrigerator for 2 hours, turning bag occasionally. Remove chicken from bag, reserving marinade. Coat grill rack with cooking spray; place on grill over medium hot coals. Place chicken on rack and cook 8 minutes on each side, basting frequently with reserved marinade. Remaining items are for the sandwich.