I'll be honest — when a bottle lands on my desk at cask strength from a distillery I'm not deeply familiar with, that's when things get interesting. Driftless Glen 5 Year Old Single Barrel Rye arrives at a hefty 62.5% ABV, and at five years old from a single barrel, there's nowhere to hide. Every decision the distillery made is right there in the glass, uncut and unfiltered. That's confidence, and I respect it.
Driftless Glen hails from Wisconsin's Driftless Area — a region that avoided glaciation during the last ice age, leaving behind rolling hills and mineral-rich water sources. They're still a relatively young operation in the grand scheme of American whiskey, but a five-year single barrel rye at this proof tells me they're not rushing things out the door just to make a quick sale. They're letting the whiskey speak for itself.
What to Expect
At 62.5% ABV, this is a proper barrel-proof rye. For those less familiar with why that matters — when whiskey enters the barrel, US law caps rye entry proof at 125 (62.5% ABV), and what comes out the other end at barrel strength carries every bit of character the wood and grain put into it. There's no dilution smoothing over rough edges or muting flavour. A five-year age statement in a single barrel rye sits in a sweet spot: long enough for the oak to have a genuine conversation with the spirit, short enough that the grain character — that signature rye spice and herbal bite — hasn't been buried under wood tannins.
The single barrel designation is worth paying attention to here. Every barrel is its own microclimate. Warehouse placement, seasonal temperature swings in Wisconsin (and they get proper winters up there), the individual character of the oak — all of these variables mean your bottle is genuinely one of a kind. That's part of the appeal and part of the gamble, but at five years and this proof, the odds are firmly in your favour.
The Verdict
At £79.95, this sits in competitive territory for a cask-strength single barrel American rye, and I think it earns its place. You're paying for transparency — no blending across barrels, no water added, no shortcuts. What you get is an honest snapshot of what Driftless Glen's rye tastes like straight from the wood. For anyone building their understanding of American rye whiskey, bottles like this are essential education. You learn more from one pour of a well-made barrel-proof single barrel than from a dozen blended, diluted expressions. I'm giving this a 7.8 out of 10. It's a genuinely compelling pour that over-delivers on character, and it signals that Driftless Glen is a name worth watching as their stocks mature further.
Best Served
With water. Seriously — don't be a hero at 62.5%. Add a few drops at a time and watch this thing open up in stages. Once you've explored it neat (or close to it), this rye has the backbone for a killer Manhattan. The high proof means it won't get lost behind the vermouth, and that rye spice should cut right through the sweetness. Use a 2:1 ratio with a quality sweet vermouth, two dashes of Angostura, and stir it properly — you'll thank me.
