4 skinless, boneless chicken breast halves (4 oz. each)

For the Sauce
1/4 cup ketchup
3 tbsp. cider vinegar
1 tbsp. ready make white horseradish
2 tsp. firmly packed dark brown sugar
1 clove garlic, minced
1/8 tsp. dried thyme
1/4 tsp. black pepper

Serves 4

From Sean's Family Recipes

Preheat broiler, heat a charcoal grill until coals form white ash, or preheat a gas grill to med.

To prepare sauce, in small saucepan, combine ketchup, vinegar, horseradish, brown sugar, garlic, and thyme.
Mix well.
Bring to a boil over med. low heat.
Cook stirring frequently, until thickened, about 5 min.
Remove from heat; stir in pepper.

Brush top of chicken pieced lightly with sauce.
Place chicken, sauced side down, on a foil lined broiler pan or grill rack.
Brush other sides lightly with sauce.

Broil or grill 3 " from heat, basting with remaining sauce and turning until no longer pink in center, about 5 to 7 min, per side. 
Let chicken stand for 5 min. before severing.