Marinated Turkey for the Grill

Recipe from Erin Mendenhall

3 lb turkey breast, cut into large chunks (I use tenderloins)
1 C soy sauce
1 C cooking oil
2 C 7-Up
¼ tsp horseradish powder or ginger
½ tsp garlic powder

Mix soy sauce, oil, and spices.  Add 7-Up.  Pour marinade over meat and refrigerate 24 hours.  Grill.