Have you ever wondered why whiskey is referred to as a fifth? The answer lies in the historical measurement system used to determine the size of liquor bottles. In the United States, the term “fifth” originated from the fact that the standard whiskey bottle was one-fifth of a U.S. liquid gallon. Let’s delve deeper into this fascinating aspect of whiskey history.
The Origin of the Fifth
Back in the day, when owning and producing liquor was regulated, it was essential to have a standardized measurement system. In the late 19th century, the U.S. government determined that a legal gallon of whiskey was equal to 231 cubic inches. To make it easier for consumers to understand the size of whiskey bottles, distilleries began producing bottles that held exactly one-fifth of a gallon, or roughly 25.6 fluid ounces.
The Significance of the Measurement
The choice of one-fifth as the standard size for whiskey bottles was not arbitrary. It allowed consumers to easily calculate the proof of the whiskey they were purchasing. In those days, whiskey was often sold at 100 proof, which meant that it contained 50% alcohol. With a one-fifth bottle, consumers could quickly determine that the bottle contained precisely 50 proofing gallons, making it more convenient for both buyers and sellers.
Transition in Europe
While the concept of a fifth became popular in the United States, Europe had its own measurement system for liquor bottles. In Europe, whiskey was traditionally sold in bottles of 750 milliliters, which is slightly larger than a fifth. The 750ml size was already commonly used for bottles of wine, sparkling wines, and various liquors. As a result, this size became more prevalent in European markets, gradually replacing the fifth measurement system.
Evolving Bottle Sizes
Over time, the standard bottle size for whiskey continued to evolve. In addition to the fifth (25.6 fl oz or 757ml) and the European 750ml bottles, other sizes such as the half-pint, pint, quart, and half-gallon have become popular. Each size has its own unique charm, catering to different preferences and occasions.
A Symbol of Tradition
Despite the shift in bottle sizes over the years, the term “fifth” has remained ingrained in whiskey culture. It carries a sense of tradition and history. Even though most whiskey bottles no longer hold an exact fifth of a gallon, the term has become synonymous with a standard-sized bottle of whiskey. It continues to be used by whiskey enthusiasts and industry professionals, passing down the legacy of the early days of American distilling.
Conclusion
In conclusion, whiskey is called a fifth because it originated from a time when it represented one-fifth of a U.S. liquid gallon. This practical measurement allowed consumers to easily gauge the proof of their whiskey and make informed choices. While the measurement system has evolved, with Europe adopting the 750ml size, the term “fifth” remains a symbol of tradition and heritage within the whiskey community. So, next time you raise a glass of whiskey, you’ll have a deeper understanding of where the term “fifth” originated.
