The Jack Daniel’s Single Barrel is whiskey which, in contrast to Old No 7, has been drawn from barrels which have sat maturing at the highest points of the Jack Daniel’s barrelhouses. At these higher points in the barrelhouses, just as in a second or third floor in a house, the temperature is likely to fluctuate more dramatically than at lower points. So, for example, during hot times (summer, the day) these higher points in the barrelhouses would likely be warmer than lower points, but during cold times (winter, night) these higher points in the barrelhouses would likely be colder than lower points. This means that barrels which sit at the highest points of the barrelhouses tend to be exposed to more extreme temperature changes.

Only one out of every 100 barrels are set aside to mature whiskey that becomes Jack Daniel’s Single Barrel.