The Kentucky Mule Is Summer 2026's Most Refreshing Bourbon Cocktail: How to Make It (and 8 Bottles for It)
If the whiskey highball is summer's easiest long drink, the Kentucky Mule is its most refreshing. It's the bourbon answer to the Moscow Mule — bourbon, spicy ginger beer and fresh lime over ice in a frosty copper mug — and it might be the single best way to cool down with whiskey on a hot day. The ginger's heat, the lime's bite and the bourbon's caramel sweetness lock together into something crisp, fizzy and dangerously easy to drink. With Father's Day on June 21 and cookout season in full swing, it's the perfect crowd-pleaser to have in your back pocket.
Also called a Whiskey Buck, the Kentucky Mule is beloved by bartenders for one simple reason: it's nearly impossible to mess up, and it flatters almost any bourbon you pour into it. The ginger beer does the heavy lifting, so a value workhorse shines just as brightly as a premium pour. Below is how to build one properly, plus eight in-stock bottles — from everyday mixers to bold, barrel-proof showstoppers — that each make a great Mule.
The 8 bottles in this guide
How to make the perfect Kentucky Mule
The build is beautifully simple: fill a copper mug (or a highball glass) with ice, add 2 ounces of bourbon and half an ounce of fresh lime juice, then top with 4 to 6 ounces of cold ginger beer. Give it a gentle stir, garnish with a lime wedge and a sprig of mint if you like, and serve. That's the whole thing — no shaker, no syrups, no fuss.
Two details elevate it from good to great. First, use a real, spicy ginger beer (not ginger ale) — the sharper the ginger, the better it plays against bourbon's sweetness. Second, always use fresh lime juice, never bottled. The copper mug isn't just for looks, either: it keeps the drink frostier longer, which matters on a 90-degree afternoon. Want it a little drier and spicier? Reach for a rye instead of a bourbon — more on that below.
The best bourbons for a Kentucky Mule
For an everyday Mule, it's hard to beat Bulleit Bourbon ($37.09) — its high-rye spice echoes the ginger beautifully, and at this price it's the ideal mixing bourbon. Woodford Reserve ($44.99) steps it up with balanced caramel and orchard fruit that round out the ginger's heat, while Evan Williams Bottled-in-Bond ($38.09) is the value champion — 100 proof, bonded, and built to keep its flavor from getting lost under all that fizz. For a bigger, oakier pour, Knob Creek 9-Year ($49.99) at 100 proof gives the Mule real backbone, and Elijah Craig Small Batch ($40.99) adds warm baking spice that's tailor-made for ginger. On a budget? Our best bourbons under $50 guide has more mixing-friendly value bottles.
Go barrel-proof for a bolder Mule
For the dad who likes real intensity, a high-proof bourbon keeps its flavor front and center even under a flood of ginger beer. Wild Turkey Rare Breed ($63.99) is a barrel-proof classic — robust, spicy and uncut — that turns the Mule into a powerhouse without overpowering the lime. It's a gift-worthy bottle in its own right; for more ideas, see our Father's Day gift-by-cocktail guide.
Go rye for a drier, spicier Mule (the Kentucky Buck)
Rye is arguably the Mule's ideal partner — its dry, peppery spine doubles down on the ginger for a sharper, more bracing drink. High West Double Rye ($39.99) blends a young, spicy rye with an older, rounder one for a bold but balanced pour that's superb here, while Sazerac 6-Year Rye ($34.99) — the clean, aromatic New Orleans classic — is one of the best value ryes we carry for cocktails. New to the grain? Our explainer on bourbon vs. rye breaks down the difference, and the best rye whiskeys roundup goes deeper.
Make it a pitcher
The Kentucky Mule scales effortlessly for a crowd — perfect for a Father's Day cookout. Combine the bourbon and lime in a pitcher, then top each glass with ginger beer to order so it stays fizzy. For more warm-weather ideas, our summer bourbon cocktails guide has six more refreshers, and if you'd rather stir something spirit-forward, the Boulevardier and Old Fashioned guides cover two more bourbon classics.
Stock up for Mule season
Every bottle here is in stock and built for mixing. Order in time for Father's Day — our shipping deadline guide has the order-by dates. Browse the full bourbon collection for more crushable pours, explore the spicier side in our whiskey collection, or see what's trending in our best sellers. Grab some ginger beer, slice a few limes, and pour summer's most refreshing bourbon cocktail.
