One of Boulevard Brewing Co.’s most popular sour beers will be making a return this year for the ninth time.

According to filings with the Alcohol and Tobacco Tax and Trade Bureau (TTB), Love Child No. 8 is a 9 percent ABV sour ale brewed with both brettanomyces and lactobacillus that will be packaged in 750ml bottles. While the first incarnation of the sour beer was a soured version of the Kansas City, Mo.-based brewery’s Bourbon Barrel Quad, recent releases have “included an increasing amount of Flanders-style red.”

The ale is part of Boulevard’s Limited Releases Series, which includes both limited releases and year-round beers packaged in both 750ml bottles and 12-ounce bottles.

An email sent to the brewery for additional information was not immediately returned.