El Supremo Rum 18 Aged in Oak is the most mature and complex expression of the brand, crafted from slowly reduced fresh-cane syrup and aged for a full 18 years to achieve its depth and character. The rum begins its maturation in barrels made from the Paraguayan wood Incienso Marrón and is later finished in French oak, resulting in a deep amber color and a richly layered aromatic profile.

The nose reveals dried fruits, dark chocolate, subtle smoke, and warm woody tones, while the palate offers rounded flavors of caramel, honey, dried apricot, and spice. Its texture is full and velvety, gradually opening into more structured and mature nuances that reflect the long aging process.

The finish is long, elegant, and lightly smoky, with lingering hints of espresso, leather, and honeycomb. This edition is best enjoyed neat, made for connoisseurs who appreciate pronounced complexity and an authentic expression of Paraguayan terroir.