What is the impact of fortification on the storage and aging of sherry wines?

Fortification has a significant impact on the storage and aging of sherry wines. By adding alcohol to the base wine, which raises its alcohol content to around 15-22%, fortification helps preserve the wine and protect it from spoilage. The increased alcohol level inhibits the growth of unwanted microorganisms and allows for longer aging periods without the risk of spoilage.

In addition to this preservation aspect, the method of aging sherry can vary according to its style, with different influences on flavor development and complexity over time. Some styles of sherry, such as Fino and Manzanilla, may be aged under a layer of yeast known as "flor," which contributes to the unique characteristics of these wines. However, the crucial aspect is that fortification enables the wine to be stored for extended periods while enhancing its stability, allowing producers to achieve the desired aging profiles without compromising the integrity of the wine.