Balvenie 21yr Portwood is a flagship in Balvenie’s small line up of Port Wood whiskys. It was created by placing a rare 21 year old Balvenie, matured in oak, into port casks, or pipes, and checked every month for maturity characteristics.Balvenie distillery is located in the Speyside region, right next door to the Glenfiddich distillery, and has been producing excellent malts since 1893. Balvenie is one of the few distilleries that happen to have their own malt floors, and grow their own barley on the adjoining lands.