Jim Beam has used the same ratio of corn, rye, and barley in its mash bill for over 200 years and the same yeast colony for 75 years. Their Bourbons are aged for twice the legally required minimums. Meaning that these blanks have been soaking in that liquid libation for a minimum of 4 years and some of the whiskeys aging 12 years or more. The barrels are coopered by hand, from charred white oak and metal hoops. You can see the char from the insides of these barrels preserved on the 6 side of every d6 we make from them.