Jack Daniel's 'Single Barrel' Heritage Barrel Tennessee WhiskeyJack Daniel's Single Barrel Heritage Barrel is the limited edition series for the Tennessee whiskey brand which first launched in 2018. This 2019 release is a year older than the previous version. As is the case for all Jack Daniel's whiskeys, the barrels were constructed at the brand's own cooperage facility. Master distiller Jeff Arnett and his team selected fewer than 200 American white oak barrels to be toasted and then charred.