Central Waters Brewing Co. most popular series is getting its first release aged in rum barrels.

The beer in question is Rum Barrel Coconut Porter, a “deep, rich” porter aged in rum barrels and conditioned on a “butt load” of coconut. The porter will join the Amherst, Wis.-based brewery’s Brewer’s Reserve Series, which is made up of different styles of beers that have been aged in various types of barrels.

According to a label filed with the Alcohol and Tobacco Tax and Trade Bureau (TTB), Rum Barrel Coconut Porter will be packaged in 12-ounce bottles. An email sent to the brewery for additional information was not immediately returned.