Bourbon 101

As America celebrates its 250th birthday, it is fun to learn more about a whiskey recognized as a distinctive product of the USA. Bourbon is the quintessential American whiskey: Congress recognized it as a distinctive product of the United States in 1964, and federal rules require it to be distilled and aged here. Bourbon has deep roots in Kentucky, but it does not have to be made there. It must have a minimum of 51% corn in its recipe, or mash bill, and be stored in new, charred oak barrels. No coloring, flavoring or blending materials may be added; water may be used to adjust the proof. The proof limits are 160 maximum for distillation, 125 maximum when entering the barrel and 80 minimum for bottling.

Two familiar bourbon recipes use rye or wheat alongside corn. Rye-recipe bourbon is not automatically “high rye”; that term describes a relatively rye-heavy recipe rather than a separate federal category. Rye is often associated with baking-spice notes, while wheated bourbon can offer a softer profile. These are starting points for exploration, not promises of what every bottle will taste like. The grain recipe is only part of the story, and oak maturation contributes familiar notes such as vanilla. The recipe that is most interesting to this author is four-grain bourbon, which generally includes both wheat and rye.

Many familiar bourbon mash bills contain three grains, with malted barley alongside corn and rye or wheat. But bourbon does not legally require three grains or malted barley. Malted barley supplies enzymes that help convert starch into fermentable sugars, which yeast then turns into alcohol. Ground grain, called grist, is mixed with water and cooked before fermentation produces distiller’s beer. Distillation then concentrates the alcohol and helps shape the spirit’s character. Equipment and methods vary by distillery, so there is no single sequence of distillation steps that describes every bourbon. The spirit selected for maturation goes into new, charred oak barrels.

Single barrels are a must-try for anyone wanting to know more about bourbon. A single-barrel bourbon is exactly that: the whiskey in that bottle comes from one barrel. Many other bourbons combine whiskey from multiple barrels, with batch sizes varying by producer. Blanton’s, introduced in 1984, is credited by its producer as the first commercially sold single-barrel bourbon. Blanton’s Original Single Barrel comes from the center-cut or middle sections of Warehouse H. But even with the environment and recipe kept similar, there is still variability between barrels. Another fun option is to find a single-barrel store pick and place it next to the standard release of the same bourbon. If you’re curious whether you have a single barrel or a combination of barrels, pay attention to the label beyond the front artwork and proof.

Brick warehouses and barrels at Buffalo Trace Distillery in Frankfort, Kentucky.
Buffalo Trace warehouses in Frankfort, Kentucky, photographed in 2017. Photo: Acdixon / Wikimedia Commons (CC0).

A bourbon’s label offers useful clues, but a bottler’s address is not necessarily the location where the whiskey was distilled. Look for the state of distillation and read the accompanying wording carefully. Bourbon aged at least two years may use the designation “straight.” A state designation such as Kentucky also has origin and aging requirements; the one-year minimum in Kentucky’s whiskey statute is not a substitute for straight bourbon’s two-year requirement. An age statement on bourbon refers to the youngest whiskey in the bottle. An age statement is generally required below four years and optional at four years or older.

One landmark in bourbon history is the Bottled-in-Bond Act of 1897. Bottled-in-bond bourbon must be at least four years old, made by the same distiller at the same distillery during a single distilling season, and bottled at 100 proof. Colonel E. H. Taylor, Jr. championed the Act, and the bourbon range bearing his name includes bottled-in-bond expressions such as Small Batch. Its Barrel Proof expression is bottled at cask strength rather than the 100 proof required for bottled-in-bond whiskey. The designation is not limited to bourbon: other distilled spirits can qualify under the applicable rules.

The final category this author would recommend for an initial flight is a finished bourbon. Purists may disagree about the appeal, but finishing can be a fun exploration of how another barrel brings new depth to whiskey. There is also a labeling distinction: bourbon finished in wine barrels needs a designation explaining the finish, rather than simply “bourbon whiskey.” Port is one example of a wine-cask finish. Rum casks and barrels that previously held honey are other options to explore. Read the full description so you know what is in the glass.

Three whiskey tasting glasses beside water and a notebook.
Three small tasting pours with water and a notebook.

Remember, drinking liquor straight is an acquired taste, and it does not have to become your preference. Do not judge an entire class of liquor by the burn you remember from taking shots in your uni days. Tasting whiskey neat can help you understand how you might use it in a cocktail and appreciate its nuances. Keep pours small, take your time and feel free to add water.

When you’re tasting whiskey, try a small sip and give yourself time before the next one. There is no required number of sips or a need to push through discomfort. Tasting notes are generally separated into three parts: the nose, the palate and the finish. There can be plenty to explore within each, but before you delve into the nuance, ask yourself a simple question: is this good? Or, do I like it? Each person’s impressions will draw on their own experiences with smells and tastes. Above all else, enjoy yourself and this fun little piece of American history.

Suggested bourbons to explore by category
Availability and prices vary; some of these bottles can be difficult to find.

Rye-recipe bourbons: Four Roses Small Batch, Basil Hayden, Woodford Reserve, Old Forester.
Wheated bourbons: Maker’s Mark, Wilderness Trail’s wheated bourbon, Penelope Wheated.
Bottled-in-bond bourbons: Heaven Hill Bottled-in-Bond 7-Year, E. H. Taylor, Jr. Small Batch.
Single-barrel bourbons: Henry McKenna 10-Year Single Barrel, Blanton’s Original Single Barrel, Evan Williams Single Barrel.
Finished whiskeys: Angel’s Envy bourbon finished in port wine barrels, Isaac Bowman Port Barrel Finished Bourbon, and Starlight Distillery’s finished-bourbon expressions.

WS

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