1/2 cup bourbon, * OR 2 tablespoons cider vinegar
1/2 cup honey
1/2 cup mustard
1 teaspoon dried tarragon
3-4 sweet potatoes, cut into 24 one-inch cubes
1 1/2 pounds pork tenderloin, cut into 24 one-inch cubes
4 medium ripe peaches, unpeeled, pitted and quartered
4 green peppers, each cut into 8 two-inch pieces
8 yellow onion, each cut into 4 two-inch pieces
olive oil, for grilling