Zaftig Brewing Co. -- a Columbus brewery known for its high-alcohol and flavorful concoctions -- will celebrate its fourth anniversary Saturday (May 12) with the release of a new high-alcohol beer in 12-ounce bottles.

Ol' Rugger is a 17 percent Russian imperial stout that was aged in Four Roses bourbon barrels for 12 months. The brewery also will release three variants: vanilla bean and cocoa nibs, coconut and cocoa nibs, and a proprietors blend.

Ol' Rugger will go for $13.99. The variants will sell for $15.99. There will be a limit of six per customer.

Zaftig will hand out tickets for the release starting at 11 a.m., with the brewery opening at noon for the celebration. The beer will be sold starting at 1 p.m. (The anniversary party and release also coincide with Columbus Craft Beer Week.)

"It has been a roller coaster over the past four years with expansion, and the market changes, but we are really enjoying the ride," co-founder and brewer Jim Gokenbach said.

He said the brewery will add several new beers to its portfolio in the coming year, including a year-round peanut butter stout and Hop Swapper double NEIPA. Zaftig also is planning "lots of barrel-aged beer because, well, that is why we do this," Gokenbach said.

For more details about the anniversary party and Ol' Rugger release, click here.