What is a characteristic flavor profile of a Sour in the Fruity-Sour category?

The characteristic flavor profile of a Sour in the Fruity-Sour category is mouth puckering and tart. This descriptor captures the essence of what makes fruity sours unique and enjoyable. These beers often feature a prominent sourness derived from various fermentation techniques, such as the use of wild yeast strains like Brettanomyces or the addition of lactic acid bacteria. The tartness is typically accompanied by vibrant fruit flavors, which balance with the sourness, creating a complex and refreshing drinking experience that can provoke a physical reaction like puckering of the mouth.

In contrast, the other flavors mentioned do not align with the sour beer profile. Sweet and malty reflects characteristics more typical of dessert or traditional style beers, while crisp and refreshing is generally associated with lighter lagers or wheat beers. Bold and robust is indicative of dark or strong beers, which generally focus on deep malty flavors rather than the tartness that defines fruity sours. Thus, mouth puckering and tart accurately encapsulates the distinctive flavor experience expected from this category of sour beers.