Personalized Oak Barrel 2 Liter (Empty)Personalized Oak Bourbon Barrels (Empty) are a great gift we thought this would be a great benefit to the flavor of our great Bourbon or your favorite spirits. Pour it in and let it sit and develop a better aged taste. 2 Liter is Resolute Reserves smallest barrel it will hold two 750ml bottle of liquor. ships empty but fill it with your favorite Resolute Bourbon It may be small but it is packed full of flavor. In fact it is our fastest aging barrel.