Patent attributes
A rectangular or cylindrical container made of stainless steel or another liquid-impervious material has a plurality of openings formed in the side wall(s). Wooden boards, made of white oak or other wood for aging and flavoring beverages, are fitted over the openings and sealed so that their inside surfaces contact the liquid in the container. The inside surfaces have cross-grain cuts such as saw cuts or holes, which are used to enhance the infusion of beverage liquid into the wood to age the beverage rapidly and flavorfully. When one batch is finished, the used boards are removed and new ones are fitted into the openings and used to treat another batch. Instead of, or in addition to the boards over the side-wall openings, hollow wooden air boxes having external cross-grain cuts are positioned in the container.