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What Is the Difference between Cognac and Whiskey?

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  • Written By: Terrie Brockmann
  • Edited By: Melissa Wiley
  • Last Modified Date: 27 August 2016
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One of the most obvious differences between cognac and whiskey is that cognac makers use grapes, and whiskey makers use grains. Although both processes use fermentation to create the liquors, cognac makers use a double distillation process. Government regulations require that cognac makers create the liquor solely in the region of Cognac in France, using only certain species of grapes. Whiskey makers are free to make whiskey in many countries, and some countries, such as Ireland and the United States, are famous for their whiskey.

As with many foods, cognac and whiskey have a long history of development and refinement. Cognac differs from other fruit-based liquors because wine makers double distill it and age it in oak barrels. The double distillation, called charentaise distillation, creates a less harsh drink. Cognac shipped in oak barrels, or casks, is more flavorful and smoother because of the time it sits in the barrels on ships and in storage.

Similarly, the Irish and Scottish people had to improvise when making liquor and created whiskey. The scarcity of grapes on the islands prompted the creation of the grain-based liquor. They used the grains that were available, and over time the process was refined to include aging in barrels. Aging the fermented liquid in oak barrels is common to cognac and whiskey. In some areas, including Ireland, people use the word whisky; in the United States and other areas, the drink is called whiskey.

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Cognac makers ferment grape juice for about five days before the first distillation. After the second distillation, the makers seal the cognac in barrels. Usually, they list the cognac age as Very Special (VS), which means a minimum of two years in the barrel; Very Special Old Pale (VSOP), which is four years or more; or Extra Old (XO), which is stored in the barrel more than six years. Some cognac makers age their products for more than 20 years.

In contrast, whiskey makers distill the grain mash only once and list the age in years. For example, a label may say 12-year whiskey. Some of the common ages are five, 10 and 15 years. A similarity between cognac and whiskey is that connoisseurs judge each one's age by the amount of time spent in the barrel, not in a bottle.

Another difference between cognac and whiskey is that cognac makers use the juice of only select grapes, but not other fruits. Generally, whiskey makers use barley as a base, but may use other grains as well. These grains include rye and malted rye, wheat, and corn. Often whiskey makers combine grains, such as in bourbon whiskey, that features corn as more than half of the grain.

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anon971310
Post 6

@ddljohn-- My understanding is that to be called cognac, it has to be made in that region of France and with certain grapes. If it's made anywhere else and you now have brandy.

candyquilt
Post 5

@ZipLine-- Cognac and whiskey are definitely different but you may not be very sensitive to their differences yet. If you drink more of each, after a while you will be able to distinguish the differences in flavor better.

Cognac and whiskey probably seem similar to you because they are both aged in different barrels and go through a similar process of fermentation and distillation.

Wood barrels tend to give a distinct flavor to liquors, especially if they are aged over a longer period of time. I'm guessing that that's the flavor you are finding similar. Otherwise, they are not comparable.

When it comes to whiskey vs cognac, I personally like cognac more. I think it has a smoother taste in comparison to whiskey.

ZipLine
Post 4

I've had young brandy cognac and whiskey back to back and honestly, they tasted very similar to me. I couldn't taste much of a difference. So I'm surprised to know that one is made from grapes and the other from grains.

How come they taste similar when they are in fact very different? Or am I just a very bad taster?

ddljohn
Post 3

Is cognac seriously only made in France? I have a hard time believing that. Surely, other countries must make it as well.

Ledgenderous
Post 2

I think that the alcohol amount in cognac and whiskey, like that in other liquors, would vary depending on the length of fermentation, as well as the distillation process.

Hymnomove
Post 1
Are there different amounts of alcohol in cognac as opposed to whiskey?

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