Orphan Barrel Indigo’s Hour 18 Year Bourbon 750ML

Orphan Barrel Indigo’s Hour 18 Year Bourbon 750ML is an 18-year-old straight bourbon whiskey bottled at 45% ABV (90 proof) in a 750ml bottle. A Gold Medal winner at the San Francisco World Spirits Competition, this release stands out for its unusually long maturation of MGP-distilled bourbon in Kentucky warehouses — a detail that shapes its dark, oak-driven character in ways that shorter-aged MGP expressions simply cannot match.Quick Facts: ABV: 45% (90 Proof)  |  Origin: Indiana / Kentucky, USA  |  Age: 18 Years  |  Distillery: MGP of Indiana  |  Mashbill: 68% Corn, 28% Rye, 4% Malted BarleyProduction & HeritageIndigo’s Hour is part of the Orphan Barrel series, a Diageo project dedicated to uncovering and releasing forgotten or overlooked barrels of aged American whiskey. The liquid itself was distilled at MGP of Indiana — one of the most prolific contract distilleries in the country, known for its high-rye bourbon mashbill of 68% corn, 28% rye, and 4% malted barley. Rather than aging at the Lawrenceburg, Indiana facility, these barrels spent a full 18 years maturing in Kentucky warehouses, where hotter summers and wider temperature swings drive more aggressive interaction with the charred oak. Final bottling took place at Cascade Hollow in Tennessee, another Diageo-owned facility. The extended aging and Kentucky climate contribute heavily to the bourbon’s dense, oak-forward personality.Tasting NotesAroma: The nose opens with rich molasses and caramel before giving way to dark stone fruit and vanilla. Herbal undertones and a dusting of black pepper add complexity, hinting at the high-rye mashbill and deep barrel influence.Taste: Creamy vanilla greets the palate first, quickly followed by layered red fruit notes that brighten the mid-palate. As it develops, honey graham cracker, nougat, and almond emerge, providing a toasted, confectionery contrast. Deeper tones of molasses, barrel char, cinnamon, and cardamom build toward a spice-driven peak anchored by mature oak.Finish: The finish carries an approachable yet potent aged oak mustiness, lingering with tartness and dry spice. It is long and warming, with faint echoes of char and dark fruit that fade slowly.How to Drink Indigo’s HourAt 18 years old and 90 proof, this bourbon rewards patient sipping. Serve it neat in a Glencairn or tulip glass, allowing a few minutes for the aromas to open; a few drops of water can help tame the oak intensity and amplify the red fruit and vanilla notes. For cocktail applications, three options work particularly well: an Old Fashioned, where the bourbon’s dark fruit and caramel stand up to bitters and sugar without losing definition; a Boulevardier, where its oak backbone and spice complement sweet vermouth and Campari; and a Vieux Carré, where the mature, complex profile holds its own alongside rye, cognac, and Bénédictine.Best For
Gifting a bourbon enthusiast who values aged, limited-release American whiskey
Adding a long-aged MGP bourbon to a serious whiskey collection
After-dinner sipping alongside dessert or a cigar
Side-by-side tastings comparing Kentucky-aged versus Indiana-aged MGP expressions
Frequently Asked QuestionsWhat does Indigo’s Hour taste like? Indigo’s Hour leads with creamy vanilla and red fruit, then transitions into honey graham cracker, nougat, almond, and warming spices like cinnamon and cardamom, all grounded by deep aged oak.How does Indigo’s Hour compare to Elijah Craig 18 Year? Both are 18-year bourbons, but Elijah Craig 18 Year is distilled and aged at Heaven Hill in Kentucky using a lower-rye mashbill, producing a sweeter, more traditional profile. Indigo’s Hour uses MGP’s higher-rye recipe (28% rye), which gives it more spice and a distinctly different grain character despite also aging in Kentucky.Is Indigo’s Hour good for sipping neat? Yes — its 90-proof bottling strength and 18 years of maturation make it an excellent neat sipper, delivering complex flavors without excessive alcohol heat.Where is Indigo’s Hour made? The bourbon was distilled at MGP of Indiana in Lawrenceburg, Indiana, then transferred to Kentucky warehouses for 18 years of aging, and finally bottled at Cascade Hollow distillery in Tullahoma, Tennessee.What foods pair well with Indigo’s Hour? Dark chocolate truffles complement its caramel and oak notes. Pecan pie mirrors its nougat and toasted nut flavors. Smoked brisket matches its barrel char depth. Aged cheddar contrasts its sweetness with savory sharpness. Crème brûlée echoes its vanilla and caramelized sugar character.What sizes does Indigo’s Hour come in? Orphan Barrel Indigo’s Hour 18 Year Bourbon is available in the standard 750ml bottle size.Is Indigo’s Hour worth the price? Indigo’s Hour positions as a premium, limited-release bourbon within the Orphan Barrel series, and its 18-year age statement places it among the older commercially available American whiskeys — a category where supply is inherently scarce and pricing reflects that rarity.Why Indigo’s Hour?Eighteen years of uninterrupted aging is rare for any bourbon, and Indigo’s Hour earned a Gold Medal at the San Francisco World Spirits Competition — a credible validation of what that extended maturation produces. The decision to age MGP’s high-rye bourbon in Kentucky rather than Indiana is a meaningful one; Kentucky’s more extreme seasonal swings extract deeper flavor from the barrel, resulting in a denser, more oak-influenced spirit than a typical MGP product. The Orphan Barrel series has built its reputation on surfacing exactly these kinds of overlooked aged stocks, and Indigo’s Hour represents one of the longer-aged expressions in the lineup. For bourbon drinkers seeking genuine age and complexity backed by a distinctive production story, this bottle delivers substance over hype.