It is not only wine that needs to age, whiskey also needs to age that is why there are what you call the whiskey barrels. When the process of fermenting the whiskey is done, they will then be placed inside oak barrels so that they can be aged accordingly. Using oak whiskey barrels is very common for whiskey aging as this kind of barrel helps in the whiskey getting the characteristics that timber offers. More info at this site

Traditionally, stainless steel tanks are the first place that whiskey must go in with their fermentation process, and afterwards, the fermented whiskey should then go inside oak whiskey barrels for them to age. There are also some varieties of whiskeys that will immediately be placed inside oak whiskey barrels not just to age but to ferment as well.

The kind of oak that you choose as you go looking for oak whiskey barrels for sale will also matter in how you will be able to ferment and age the whiskey that you have. For sure, there are a lot of sellers of whiskey barrels for sale now that you can find in the market. When you intend to use the best oak whiskey barrels in town, then you must be getting the French oak kind of whiskey barrels. Unlike in the past, French oak whiskey barrels are not as rare anymore as you can find a great number of them among oak whiskey barrels for sale. https://en.wikipedia.org/wiki/Barrel  

For a long time, it was very thought-provoking what kind of oak whiskey barrels should be obtained. Until this time, the best oak whiskey barrels should be those that are made of French oak as nothing can ever compare to them in ensuring that the whiskey will be fermented and aged the right way. More info at redheadoakbarrels.com  

It seems that even the wine barrels that you can see have been made in more or less the same manner as the whiskey barrels. As wine barrels have been made using French oak just like whiskey barrels, the results have even changed dramatically for the better.ing that the oak is air dried for at least two years before they will be split to be making the staves. With whiskey barrels, you can expect a more unique process to happen to them. With the process of making whiskey barrels, you will see that before they are assembled fully, they must be placed over a small wood fire. This process is call the charring or toasting. This step must be considered of valued importance as it will say a lot of about the ability of your whiskey barrels to properly age the whiskey that you will be putting inside of them.