This Denomination of Origin Sherry Vinegar is aged in oak casks following the traditional "criaderas and solera" system used for sherry wines for a minimum of 10 years. This vinegar is an exceptional example of the quality found in the vinegars of the Jerez region. It is produced using the Solera System, a traditional process which consists of 500-litre oak barrels (that previously contained sherry wine) stacked 3 or more levels high, with the oldest vinegar stored in the bottom row of barrels (the "Solera").
No more than a third of the liquid in the Solera is removed for bottling at one time. This third is then replaced with younger vinegar from the row of barrels stored directly above the Solera called the first Criadera. The volume in the first Criadera is then replenished with younger vinegar from the row of barrels stored above the first Criadera, aptly called the second Criadera. Finally the top row of barrels is filled with the newest and youngest sherry vinegar.
All the oak barrels are placed in vast, well-ventilated structures called bodegas where they are exposed to lots of fresh air and warmth. These wooden barrels are never completely filled or sealed allowing them to constantly receive air, which aids the vinegar maturation process. This time honored aging and blending process ensures that quality vinegar is produced consistently from year to year. To earn the Reserva distinction, the vinegars must be aged in oak casks for at least two years. The Arvum Solera is older than 40 years