Steamworks Brewing Co. will continue its Firkin Fridays series by tapping its “Salty Dog” firkin at 3 p.m. Friday.

“A Salty Dog has traditionally been made with gin, though more commonly made with vodka these days,” said Steamworks Brewer Chad Quinn, in a news release.

As part of his Salty Dog recipe, Quinn returned to the more traditional gin and reduced it with raw grapefruit juice with salt. The alcohol in the gin cooked off, leaving a juniper flavor and aroma.

“This reduction was then added to the firkin with our Prudence Session IPA,” he said. “The end result should be a sweet yet balanced beer with just the right bite and dryness from the hop and juniper oils.”

A firkin is an old English unit of volume, typically a wooden cask equal to approximately one-quarter of a regular barrel, or nine-tenths of a gallon. The word “firkin” is derived from the Middle Dutch word “vierdekijn,” which means “fourth” as in one-fourth the size. Firkin beer is unpasteurized and unfiltered, contains no preservatives and is served at cellar temperature – cool but not cold.

Steamworks, 801 East Second Ave., began its Firkin Friday series to introduce unusual, specialty craft beers to patrons, and augment its regular offerings.

For more information, visit www.steamworksbrewing.com or call 259-9200.