Also known as Firestone Walker Reginald Brett
Commercial description
Sour version of Double DBA aged in bourbon barrels.
Proceed to the aliased beer...

Firestone Walker Reginald Brett

The brewer markets this same or near-same product by more than one names. This can be the result of a brewer distributing this beer under different names in different countries, or the brewer simply changing the name, but not the recipe at different points in time.