Powell Street Craft Brewery’s latest sour brew may just be the most unabashedly tart installment yet of its Kettle Sour series.

The dry-hopped ale is soured with lactobacillus—the same bacterium present in the equally refreshing Berliner Weisse, in case you don’t speak beer—resulting in an intensely sharp flavour that’s enough to kick you out of your cold-weather funk.

As its name suggests, Belgian yeasts and Mosaic hops round out the limited-edition offering, imparting an irresistible aroma of tropical fruit and citrus.

Sample the Mosaic Sour at Powell Street’s tasting room (1357 Powell Street) or by the bottle ($8.56 for 650 mL) from Darby’s Liquor Store (2001 Macdonald Street).