El Mayor Masters Collection Private Barrel 750mL is a premium tequila aged for at least three years in oak barrels. It has a smooth and complex flavor profile with notes of vanilla, caramel, and spice. This limited edition release is part of the Masters Collection from the El Mayor distillery in Mexico, and comes in a standard 750ml bottle size. It is a popular choice for tequila enthusiasts and collectors who appreciate the unique aging process and craftsmanship.