Bourbon vs. Tennessee Whiskey (2026): The Lincoln County Process Explained — and Which One You Should Actually Buy
Here is the question that starts most bar arguments about American whiskey: is Jack Daniel's a bourbon?
The technically correct answer is that it meets every legal requirement to be called one and chooses not to be. That single sentence contains the whole story of Tennessee whiskey — a category defined less by law than by one extra production step, a stack of sugar maple charcoal, and a considerable amount of state pride.
This guide covers what the Lincoln County Process actually does to whiskey, what the 2013 Tennessee law requires, how the two styles taste next to each other, and eight bottles — four Tennessee, four Kentucky — that make the comparison concrete. All eight are in stock and shipping now. If you are heading into National Bourbon Heritage Month next month, this is the argument worth settling first.
The 8 bottles in this comparison
The four rules both categories share
Before the differences, the overlap — because it is nearly total. To be called bourbon, a whiskey must be:
- Made in the United States from a mash of at least 51% corn
- Distilled to no more than 160 proof and entered into the barrel at no more than 125 proof
- Aged in new, charred oak containers — new every time, which is why the used barrels go to Scotland and the Caribbean
- Bottled at 80 proof or higher, with nothing added but water
Note what is not on that list: Kentucky. Bourbon can legally be made in any US state, and plenty is. We laid the full ruleset out in what makes a bourbon a bourbon.
Tennessee whiskey meets all four of those requirements. Every drop of it. That is why "is it a bourbon" is a genuinely tricky question rather than a lazy one.
The Lincoln County Process: what actually happens
The difference arrives between the still and the barrel. Before Tennessee whiskey goes into oak, the new-make spirit is filtered slowly through a deep bed of charcoal made from burned sugar maple — typically around ten feet of it. At Jack Daniel's the spirit drips through over roughly three to five days. It is called the Lincoln County Process after the county that once contained the Lynchburg distillery, though county lines have since moved and Lynchburg now sits in Moore County, which is the kind of detail Tennessee whiskey people enjoy.
The step is charcoal mellowing, not charcoal filtering in the vodka sense. It strips out heavier congeners and some of the corn oil and fusel notes, which softens the spirit and leaves a faint sooty-sweet character behind. It also removes a little volume and a lot of harshness, which is why unaged Tennessee whiskey tastes noticeably rounder than unaged bourbon.
In 2013 Tennessee wrote it into law. House Bill 1084 requires that anything labeled "Tennessee Whiskey" be made in Tennessee, meet the federal bourbon standard, and be filtered through maple charcoal before aging. There is exactly one grandfathered exemption: Benjamin Prichard's, in Kelso, which was distilling before the law passed and does not charcoal-mellow.
Where it gets interesting: Tennessee distilleries that make bourbon on purpose
Because the state law only governs the words "Tennessee Whiskey," a distillery in Tennessee can skip the charcoal step and simply label the result bourbon. Several deliberately do — and those bottles are the most useful thing in this comparison, because they isolate the variable.
Peg Leg Porker Tennessee Straight Bourbon Whiskey ($69.99) is the cleanest example on our shelf. Carey Bringle's Nashville brand is sourced Tennessee whiskey aged well past the four-year mark and bottled as a straight bourbon, with no Lincoln County Process at all. It drinks like a classic high-proof Kentucky pour — caramel, dry oak, a long spicy finish — while being unambiguously a Tennessee product. The Peg Leg Porker 8 Year Aged Tennessee Bourbon Whiskey ($108.09) is the older expression if you want to see what another four years does.
Nelson Bros Reserve Bourbon Whiskey ($78.99) tells a different Tennessee story. Nelson's Green Brier was one of the largest distilleries in America before Prohibition killed it; two brothers found the original bottles in a Greenbrier general store in 2006 and rebuilt the brand. Their Reserve is a blended bourbon, again with no charcoal mellowing — richer and sweeter than the Peg Leg, with a cask-influenced edge. Two Tennessee distilleries, two bourbons, zero maple charcoal between them.
How they actually taste side by side
The stereotype is that Tennessee whiskey is sweeter and softer and bourbon is spicier and hotter. That is directionally true and badly oversimplified, because mash bill and proof swamp the charcoal effect at the extremes. But run the comparison honestly and a pattern holds:
- Tennessee, charcoal-mellowed: rounder entry, banana and toasted-corn sweetness, a slightly ashy or sooty note underneath, shorter and softer finish.
- Kentucky bourbon: more grain forward, more caramel and baking spice, more heat at the same proof, longer finish with more oak tannin.
The honest test is Jack Daniel'S Whiskey ($36.09) against Bulleit Bourbon ($37.09). They sit within a dollar of each other and are close in proof, so what you are tasting is mostly the maple charcoal and the mash bill. Bulleit's high-rye recipe pushes hard into pepper and dry spice; Old No. 7 is rounder, sweeter and a good deal softer through the middle. Neither is better. They are answers to different questions.
Push the proof up and the difference sharpens. Jack Daniel's Single Barrel Barrel Proof ($72.09) runs uncut — typically well over 125 proof — and it is a revelation for anyone whose only Jack Daniel's experience is the black label with cola: dense, oily, enormously flavorful, and still carrying that characteristic soft-sweet core underneath the heat. Set it against Knob Creek Bourbon 9 Year Old Bourbon ($49.99), a 100-proof nine-year Kentucky benchmark, and the family resemblance and the divergence are both obvious in one sip.
George Dickel Bottled In Bond Tennessee Whisky ($48.99) deserves its own line. Dickel chills its spirit before charcoal mellowing — a variation on the process nobody else uses — and the bonded expression is the best value in Tennessee whiskey right now: 100 proof, a single distilling season, minimum four years, and a mineral, waxy, almost Scotch-adjacent character that surprises people who expect Tennessee to mean sweet. It is also the direct point of comparison for a Kentucky bonded pour if you have read our bottled-in-bond guide. At the top of the Dickel range, George Dickel Reserve Aged 17 Years Bourbon ($249.99) is what happens with seventeen years of Tennessee oak.
Rounding out the Kentucky side, Michter's Bourbon Whiskey Small Batch US*1 ($54.09) is the softest of the four bourbons here — low barrel-entry proof, a rounder mouthfeel, and the bottle most likely to be mistaken for a Tennessee whiskey in a blind pour. It is the useful counterexample to every clean rule in this article.
In cocktails, the difference narrows
In an Old Fashioned, the charcoal-softened profile of Tennessee whiskey reads as an easier drink — less bite, more of the sugar coming through. Bourbon holds its shape better against bitters and citrus, which is why high-rye bottles dominate the Manhattan and the Whiskey Sour. If you are stocking one bottle for mixing and one for sipping, a common split is a high-rye bourbon for the shaker and a Tennessee whiskey neat.
Either way, both categories behave the same way in a highball, which is the most underrated use for either. Our bourbon vs. rye comparison covers the other half of the American whiskey decision tree, and how to read a bourbon label will tell you which of these distinctions a given bottle is actually claiming.
So which should you buy?
Buy Tennessee whiskey if you want a softer, sweeter pour, you drink your whiskey with cola or ice more often than neat, or you have found bourbon's heat off-putting in the past. Start with George Dickel Bottled in Bond — it is the most whiskey per dollar in the category.
Buy bourbon if you want more spice, more oak and more variation between bottles. The Kentucky category is simply deeper: more distilleries, more mash bills, more proof points. Bulleit is the value entry; Knob Creek 9 Year is the one most likely to become a permanent fixture.
Buy both if you actually want to settle the argument. Two glasses, two pours, one evening. It costs less than most people assume and it ends the debate for good.
Shop the comparison
Every bottle above ships from our New Jersey warehouse. The full bourbon collection runs to hundreds of Kentucky and craft expressions; the broader whiskey collection is where the Tennessee bottles, ryes and American singles live together. If you would rather see what is moving, the best sellers page is the honest answer, and New Bourbon Arrivals shows what just landed. Tennessee buyers can also start from our Tennessee whiskey shipping page.
Two glasses. One evening. Settle it.
