Would the Real Most Common Barrel Please Stand Up The most common barrel used for aging anejo tequila is usually an American oak whiskey barrel, with casks via whiskey companies generating anejo tequila on a regular basis. The wood imparts a smoothness to the tequila, and also infusing the anejo tequila together with the wood oils. These interact with the anejo tequila to produce different flav... more.

Do Brand New French Barrels Produce the Best Anejo Tequila? Companies employ Brand new French barrels because it would make the tequila better? - Patently False. Aged tequila requires barrels.  By law a reposado tequila must spend at least two months, but not more than 364 days (under one year) in a barrel.  For anejo tequila, the tequila must spend a minimum of one year, but not more than... more.