This year marks San Diego-based TapRoom’s tenth anniversary, and to celebrate, Alesmith Brewing Co. is releasing a special variation of its most popular stout next month.

The new beer is Boxcar Speedway Stout, a 13 percent ABV imperial stout brewed with Brazil Forestero cacao nibs, hatch and mulato chili peppers, a blend of Columbian and Burundi coffee locally roasted by Swell Coffee and Madagascar vanilla beans before being aged in bourbon barrels for one year. The stout uses uses the San Diego-based brewery’s year-round Speedway Stout (12 percent ABV) as its base, a beer that was first released in 2002.

Boxcar Speedway Stout will join more than 60 variants of Speedway Stout released since 2002, including Hammerhead Speedway Stout, Hawaiian Speedway Stout and Barrel-Aged Speedway Stout among others.

According to a post on TapRoom’s website, Boxcar Speedway Stout will be packaged in 12-ounce bottles and is scheduled to be released during the company’s tenth anniversary celebration on Feb. 25.