American single malt whisky remains one of the most exciting categories in the spirits world right now, and Old Line Cask Strength is a bottle that demands your attention the moment you clock that 63.3% ABV on the label. This is not a whisky that tiptoes into the room. It announces itself.
Old Line operates out of Maryland — a state with a distilling heritage that predates Prohibition, though one that's still clawing its way back into the conversation. The American single malt category itself lacks the rigid legal framework we're accustomed to with Scotch, but the broad strokes are clear: 100% malted barley, pot-distilled or at least reflective of that tradition, and aged in a climate that swings from brutal summers to sharp winters. That temperature variation does real work on the wood, and at cask strength you're getting the unfiltered result of that exchange.
At 63.3%, this is a serious pour. There's no hiding behind dilution here — what's in the glass is essentially what came out of the barrel, and that level of transparency is something I always respect in a producer. It tells me they're confident enough in their liquid to let it speak without intervention. For a non-age-statement release, that confidence matters. NAS whiskies live or die on the quality of the cask selection and the blender's palate, and Old Line appear to be betting on both.
Tasting Notes
I won't fabricate specifics where I'd rather let you discover them yourself. What I will say is this: expect the full weight of cask strength American single malt. The high ABV will carry intense cereal and malt character, almost certainly with significant oak influence given the American warehouse conditions. A splash of water will be your friend here — it will open this whisky up considerably and let you find the layers underneath that initial heat. This is a bottle that rewards patience and a slow hand with the water jug.
The Verdict
At £79.50, Old Line Cask Strength sits in a competitive bracket. You could spend similar money on a decent cask strength Scotch or a premium bourbon, so the question becomes: what are you buying that you can't get elsewhere? The answer, I think, is character. American single malt occupies a fascinating middle ground — the malt-forward backbone of Scotch tradition filtered through American oak and American climate. It's its own thing, and Old Line delivers it without compromise at full proof.
I'm giving this a 7.7 out of 10. That's a genuine recommendation. The cask strength presentation is honest and well-executed, the price point is fair for what you're getting, and the category itself is one that any serious whisky drinker should be exploring. It falls just short of exceptional — I'd like to see what Old Line can do with a stated age or a single cask selection — but as a statement of intent, this is convincing work. Keep an eye on this distillery.
Best Served
Pour it neat first and sit with it for a few minutes — you owe any cask strength whisky that courtesy. Then add water, a few drops at a time. At 63.3%, this isn't optional; it's part of the experience. A small splash will bring it down to around 50% and open up the malt beautifully. If you're feeling adventurous, this ABV makes for a spectacular Highball — the intensity holds up against good soda water and a strip of lemon peel, giving you something muscular and refreshing in equal measure.
