Aszú wines are aged in small barrels of 136 liters (called "Gönc") and 220 liters ("Szerednye"). Oak from the mountains that border the wine region is used to make the barrels. Aszú ages in underground cellars dug into the volcanic soil. The wine is left to age here for 2 to 3 years, at a constant temperature and degree of humidity. After being bottled, Oremus Aszú continues to age in the bottle for one year.