Bourbon whiskey (; also simply bourbon) is a barrel-aged American whiskey made primarily from corn (maize). The name derives from the French House of Bourbon, although the precise source of inspiration is uncertain; contenders include Bourbon County, Kentucky, and Bourbon Street in New Orleans, both of which are named after the House of Bourbon.Kiniry, Laura. "Where Bourbon Really Got Its Name and More Tips on America's Native Spirit ". Smithsonian. June 13, 2013. The name bourbon might not have been used until the 1850s, and the association with Bourbon County was not evident until the 1870s.
Although bourbon may be made anywhere in the U.S., it is associated with the Southern United States, particularly Kentucky, through a history of advertising bourbon as a product of Kentucky with rural, Southern origins. Thanks to a market shift in the 1990s, it has also become a symbol of urbanization and sophistication, with a large consumer demographic belonging to the middle- to upper-class, including business and community leaders.
After World War II, a boom in bourbon consumption and exports occurred. Bourbon was recognized in 1964 by the U.S. Congress as a "distinctive product of the United States". Bourbon sold in the U.S. must be produced within the U.S. from at least 51% corn and stored in a new container of charred oak.
Bourbon has been distilled since the 18th century. , distillers' wholesale market revenue for bourbon sold within the U.S. was about $2.7 billion, and bourbon made up about two thirds of the $1.6 billion of U.S. exports of distilled spirits. According to the Distilled Spirits Council of the United States, in 2018 U.S. distillers derived $3.6 billion in revenue from bourbon and Tennessee whiskey (a closely related spirit produced in the state of Tennessee).
History
Distilling was most likely brought to present-day Kentucky in the late 18th century by Scots, Scots-Irish, and other settlers (including English, Irish, Welsh, German, and French) who began to farm the area. The origin of bourbon as a distinct form of whiskey is not well documented and there are many conflicting legends and claims. For example, the invention of bourbon is often attributed to Elijah Craig, a Baptist minister and distiller credited with many Kentucky firsts (e.g., fulling mill, paper mill, ropewalk) who is said to have been the first to age the product in charred oak casks, a process that gives bourbon its brownish color and distinctive taste.John E. Kleber, ed., The Kentucky Encyclopedia (Lexington: University Press of Kentucky, 1992), 103 In Bourbon County, across the county line from Craig's distillery in what was then Fayette County, an early distiller named Jacob Spears has been named as the first to label his product as Bourbon whiskey.
Although still popular and often repeated, the Craig legend is apocryphal. Similarly, the Spears story is a local favorite but is rarely repeated outside the county. There likely was no single "inventor" of bourbon, which developed into its present form in the late 19th century. Essentially, any type of grain can be used to make whiskey, and the practice of aging whiskey and charring the barrels for better flavor had been known in Europe for centuries.Cowdery, Charles K., "Who Invented Bourbon?" Malt Advocate (Fall 2002), pp. 72–75 The late date of the Bourbon County etymology has led historian Michael Veach to dispute its authenticity. He proposes the whiskey was named after Bourbon Street in New Orleans, a major port where shipments of Kentucky whiskey sold well as a cheaper alternative to French cognac.
Another proposed origin of the name is the association with the geographic area known as Old Bourbon, consisting of the original Bourbon County in Virginia organized in 1785. This region included much of today's Eastern Kentucky, including 34 of the modern counties. It included the current Bourbon County in Kentucky, which became a county when Kentucky separated from Virginia as a new state in 1792.Leon Howlett, The Kentucky Bourbon Experience: A Visual Tour of Kentucky's Bourbon Distilleries, "Bourbon- A Short History", 2012, pg. 7.Cowdery, Charles K., Bourbon, Straight: The Uncut and Unfiltered Story of American Whiskey, p. 25 Numerous newspaper articles reference whiskey from Bourbon County, Kentucky dating as far back as 1824. According to the whiskey writer Charles K. Cowdery,
Although many distilleries operated in Bourbon County historically, no distilleries operated there between 1919 and late 2014, when a small distillery opened – a period of 95 years.
A refinement often dubiously credited to James C. Crow is the sour mash process, which conditions each new fermentation with some amount of spent mash. Spent mash is also known as spent beer, distillers' spent grain, stillage, and slop or feed mash, so named because it is used as animal feed. The acid introduced when using the sour mash controls the growth of bacteria that could taint the whiskey and creates a proper pH balance for the yeast to work.
Prohibition devastated the bourbon industry. With the ratification of the 18th amendment in 1919, all distilleries were forced to stop operating. Six companies were granted permits to bottle medicinal whiskey from existing stocks: A. Ph. Stitzel Distillery (later called the Stitzel–Weller Distillery), American Medicinal Spirits (producer of Old Crow and Old Grand-Dad, sold in 1929 to National Distillers, now owned by Suntory Global Spirits), Brown-Forman (still a current major producer), Frankfort Distillery (including the George T. Stagg distillery now called the Buffalo Trace Distillery and owned by Sazerac), James Thompson and Brothers (later called Glenmore Distillery, now owned by Sazerac), and Schenley Distillery (now owned by Guinness). Prescriptions were required to buy medicinal whiskey. In 1928 when stocks ran out, the US government allowed a 100-day "Distillers' Holiday" to the select distillers to replenish the medicinal stock.
After the end of Prohibition at the federal level in late 1933, it continued in various places at the state, county and local level, and liquor sales are still prohibited or restricted in many jurisdictions in Kentucky, the primary bourbon-producing state (and in Tennessee as well, where Tennessee whiskey is made).
Production was shut down completely again in 1941 to reserve production capacity for making industrial alcohol during World War II.
According to E. Kyle Romero, after World War II, whiskey transitioned from a primarily domestic product to a major export product. The war introduced many American soldiers to whiskey, and veterans boosted a growing domestic demand. The postwar economic boom and the rise of consumer culture fueled whiskey's golden age in the 1950s and 1960s, solidifying its place in global markets. The Bourbon Institute, established in 1958, played a crucial role in reducing trade restrictions, particularly in Europe, further expanding whiskey's international reach. By 1960, the institute explicitly framed bourbon as a cultural ambassador of American identity, reinforcing the idea that its global presence reflected the broader influence of American ways and products.E. Kyle Romero, "The History Behind Canadian Boycotts of American Whiskey: A global marketplace has shaped the U.S. whiskey industry for a century, even as it brands itself distinctly American". Made By History (April 8, 2025) online
In 1964, when Americans consumed around 77 million gallons of bourbon, a concurrent resolution adopted by the United States Congress in 1964 declared bourbon to be a "distinctive product of the United States" and asked "the appropriate agencies of the United States Government ... [to] take appropriate action to prohibit importation into the United States of whiskey designated as 'Bourbon Whiskey.Defining "Bourbon". The State (Columbia, SC), May 1, 2002, p. D1. A U.S. federal regulation now restricts the definition of bourbon for whiskey to only include spirits produced in the U.S.
In recent years, bourbon and Tennessee whiskey, which is sometimes regarded as a different type of spirit but generally meets the legal requirements to be called bourbon, have enjoyed significant growth in popularity. The industry trade group Distilled Spirits Council of the United States (DISCUS) tracks sales of bourbon and Tennessee whiskey together.
According to DISCUS, during 2009–2014, the number of 9-liter cases of whiskey sold increased by 28.5% overall. Higher-end bourbon and whiskeys experienced the greatest growth. Gross supplier revenues (including federal excise tax) for U.S. bourbon and Tennessee whiskey increased by 46.7% over the 2009–2014 period, with the greatest growth coming from high-end products. In 2014, more than 19 million nine-liter cases of bourbon and Tennessee whiskey were sold in the U.S., generating almost $2.7 billion in wholesale distillery revenue. U.S. exports of bourbon whiskey surpassed $1 billion for the first time in 2013; distillers hailed the rise of a "golden age of Kentucky bourbon" and predicted further growth. In 2014, it was estimated that U.S. bourbon whiskey exports surpassed $1 billion, making up the majority of the U.S. total of $1.6 billion in spirits exports. Major export markets for U.S. spirits are, in descending order: Canada, the United Kingdom, Germany, Australia, and France. The largest percentage increases in U.S. exports were, in descending order: Brazil, the Dominican Republic, Bahamas, Israel, and United Arab Emirates. Key elements of growth in the markets showing the largest increases have been changes of law, trade agreements, and reductions of tariffs, as well as increased consumer demand for premium-category spirits.
During the second Trump administration, international sales of bourbon decreased significantly as importing countries curtailed their purchases. Provinces in Canada, which until the trade war and annexation threats had comprised 10% of Kentucky's whiskey business, stopped selling American products in government-owned liquor stores. This led to a contraction in the bourbon business, with multiple distilleries filing for bankruptcy. Overall exports of American spirits, bourbon included, fell 9% between 2024 and 2025.
By early 2026, despite the contraction in exports, the industry's total economic impact in Kentucky reached a record US$10.6 billion, according to the Kentucky Distillers' Association. This growth has been met with significant logistical hurdles, specifically in the management of a record 16.1 million aging barrels, necessitating a rapid expansion of bonded warehouse (rickhouse) infrastructure across the state. To mitigate inventory imbalances caused by global trade volatility, some major producers implemented production pauses in 2026, most notably at Jim Beam's Clermont facility.
Legal requirements
Bourbon's legal definition varies somewhat from country to country, but many trade agreements require that the name "bourbon" be reserved for products made in the U.S. The U.S. regulations for labeling and advertising bourbon apply only to products made for consumption within the U.S.; they do not apply to distilled spirits made for export. Canadian law requires products labeled bourbon to be made in the U.S. and to conform to the requirements that apply within the U.S. The European Union also requires bourbon to be made in the U.S. following the law of the country. However, in other countries, products labeled bourbon may not adhere to the same standards. For example, U.S.-produced products with somewhat lower alcohol content than the level required in the United States can be sold in Australia as bourbon, with Cougar Bourbon being an example of an export-only brand produced in the U.S. for the Australia market.
The Federal Standards of Identity for Distilled Spirits, codified under 27 CFR §5 Subpart I states that bourbon made for U.S. consumption must be: