Upon pouring the Surly Mosaic Kettle Sour, the first thing that grabs your attention is the eye-catching ’70s disco design on the 16oz can. The beer itself presents a hazy, glowing straw-colored hue through the lambic tumbler. A thick head of white foam, sustained by generous hop oils, defies the norm in the realm of sour ales.


Diving into the sensory experience, the aroma of Mosaic Kettle Sour is an explosion of zesty yuzu fruit and Sauvignon Blanc-style gooseberry. It’s an incredibly vibrant and inviting bouquet that sets high expectations for what’s to come.


From the initial sips, it’s evident that this beer lives up to the hype. The fusion of flavors, including nectarine, yuzu fruit, and lemonade, is a symphony on the palate. The high carbonation adds a champagne-like effervescence, and rather than overwhelming acidity, there’s a pleasant touch reminiscent of good Chardonnay. The leathery fruit notes, resembling peach skin and tannic white grape skins, provide a unique structure. The finish is clean and neutral, with a surprisingly low acid level for a kettle sour, making it an excellent choice for those averse to excessive sourness.


What makes Mosaic Kettle Sour stand out is its perfect balance. It seamlessly marries the airy palate of a kettle sour with the refreshing, sparkling lemonade character of a Berliner Weisse. The moderate hop bitterness replaces the expected palate-wrecking acidity, leaving a leathery fruit skin sensation. The ultra-light body, though, might be perceived as a tad watery by some drinkers.


In essence, Surly has masterfully crafted a beer that bridges two distinct worlds. It successfully combines the best elements of a kettle sour and the modern hop-forward characteristics found in contemporary IPAs. What’s remarkable is how it mitigates the drawbacks of both styles, offering a summer beer that lacks the overpowering sourness and bitterness associated with such brews. Mosaic Kettle Sour is a triumph that showcases Surly’s brewing prowess.