3 1/2 pounds Chuck roast
1/3 cup Bourbon -=OR=- brandy -=OR=- -- beef broth
1/3 cup Soy sauce
2 tablespoons Brown sugar -- packed
2 tablespoons Vinegar
2 tablespoons Vegetable oil
1/2 teaspoon Pepper
1 small Onion -- chopped
1 Garlic clove -- finely chopped

Pierce beef with fork several times on both sides.

Mix remaining ingredients in shallow glass dish.

Place beef in dish; turn to coat with marinade.

Cover and refrigerate at least 24 hours, turning beef occasionally.

Remove beef from marinade, reserving marinade.

Cover and grill beef 4-5" from medium coals, 30-35 minutes for medium doneness,
turning frequently and brushing with marinade.