Buffalo Trace Single Oak 375ML is a 375ml, 90-proof (45% ABV) Kentucky straight bourbon drawn from one of 192 individually numbered barrels in the Single Oak Project. Widely regarded as the most extensive bourbon experiment ever undertaken, each bottle represents a unique intersection of seven carefully controlled variables — from tree selection and barrel construction to mashbill and warehouse placement. Quick Facts: ABV: 45% (90 Proof) | Origin: Frankfort, Kentucky, USA | Style: Single Barrel Experimental Bourbon | Distillery: Buffalo Trace Production & Heritage Buffalo Trace Distillery in Frankfort, Kentucky — one of the oldest continuously operating distilleries in America — launched the Single Oak Project by hand-selecting 96 American oak trees, each chosen for its distinct growth rings and geographic origin. Every tree was divided into top and bottom halves, yielding 192 individual sections, each coopered into a single barrel. The resulting spirit was distilled through Buffalo Trace's column stills using either the distillery's wheat-recipe or rye-recipe bourbon mashbill, then entered into its designated barrel at one of two entry proofs, charred at different levels, and aged in different warehouse locations. The project isolates seven variables simultaneously, making each numbered barrel a one-of-a-kind expression that can never be replicated. Tasting Notes Aroma: A delicate yet expressive nose opens with caramel and vanilla, layered with light baking spice. Depending on the specific barrel's variables, subtle honey and toasted oak notes may emerge beneath the initial sweetness. Taste: The palate is rich and beautifully balanced, unfolding in layers of toffee, vanilla cream, and honeyed sweetness. Mid-palate, seasoned oak asserts itself alongside warm baking spice, while the mashbill recipe — wheat or rye — shifts the balance between soft, rounded sweetness and peppery grain character. The interplay between wood influence and spirit is pronounced, reflecting each barrel's unique construction. Finish: Long and elegant, lingering with warm oak, soft spice, and mellow caramel sweetness. The barrel's char level and warehouse position shape whether the finish leans drier and tannic or smoother and confectionery. How to Drink Single Oak Given the experimental nature of each barrel, tasting neat is the most rewarding approach — it allows the specific variables of your numbered bottle to express themselves fully. A few drops of water can open up subtler wood and grain notes. For cocktail use, the 90-proof backbone holds up well in an Old Fashioned, where the toffee and oak character amplifies the drink's core structure. A Boulevardier benefits from the bourbon's pronounced wood influence against bitter Campari. A simple Whiskey Sour lets the caramel sweetness and baking spice shine through citrus. Best For Bourbon enthusiasts who enjoy analyzing how production variables shape flavor Gifting to a whiskey collector — each barrel number is unique and will never be produced again Side-by-side tastings comparing different barrel numbers from the Single Oak Project Adding a conversation-starting bottle to a home bar or spirits library Frequently Asked Questions What does Single Oak taste like? The dominant profile across most barrels features caramel, toffee, and vanilla cream balanced by seasoned oak and warm baking spice. Specific flavor emphasis varies by barrel number, as each bottle reflects a unique combination of mashbill, char level, entry proof, and aging conditions. How does Single Oak compare to Eagle Rare 10 Year? Eagle Rare uses Buffalo Trace's same low-rye mashbill and is also a single-barrel bourbon, but it carries a 10-year age statement and a consistent flavor profile aimed at broad appeal. Single Oak is a one-time experimental release where each barrel isolates specific production variables, making it less predictable but more analytically interesting. Is Single Oak good for sipping neat? Absolutely — neat is the ideal serve for this bourbon, as it was designed to let drinkers evaluate how individual production variables affect flavor. The 90-proof strength delivers enough intensity to highlight barrel character without overwhelming the palate. Where is Single Oak made? Single Oak is produced at Buffalo Trace Distillery in Frankfort, Kentucky, one of the state's oldest and most storied bourbon distilleries. The 96 oak trees used for barrel construction were hand-selected from American forests, with each tree's origin contributing to the experiment's variables. What foods pair well with Single Oak? Dark chocolate truffles complement the toffee and vanilla cream notes. Smoked pork belly or barbecue ribs echo the charred oak influence. Pecan pie mirrors the caramel sweetness and nutty undertones. Aged cheddar or Gruyère provides a savory counterpoint to the bourbon's honeyed character. Crème brûlée reinforces the caramelized sugar and vanilla elements. What sizes does Single Oak come in? Buffalo Trace released the Single Oak Project in 375ml bottles, a deliberate choice that reflects the limited yield of each individual barrel and encourages collectors to sample multiple barrel numbers. Is Single Oak worth the price? Single Oak positions as a mid-premium experimental bourbon, and its value lies in the unrepeatable nature of each barrel — once a barrel number is gone, it cannot be recreated. For drinkers interested in understanding how wood selection, mashbill, and aging shape bourbon flavor, few products offer this level of transparency at this price tier. Why Single Oak? No other bourbon on the market isolates seven production variables within a single barrel program of this scale. The 192-barrel experiment — born from 96 individual trees, each split and tracked from forest to bottle — gives drinkers a rare window into the mechanics of bourbon flavor. Notable barrels have drawn praise from critics including Jim Murray and Paul Pacult, while spirits writers collectively selected Barrel #80 as a standout expression during a 2011 evaluation at the distillery. Every bottle carries its barrel number and recipe details on the label, turning each pour into a genuine study of cause and effect in American whiskey production.
