Which Sherry style is known for having a higher alcohol content due to oxidative aging?

Oloroso is recognized for its higher alcohol content that results from oxidative aging. Unlike its counterparts, Oloroso undergoes a deliberate process where it is fortified to a higher level of alcohol, typically around 18% to 20%. This higher alcohol content allows Oloroso to withstand oxidation without the development of a flor layer, the protective yeast film that characterizes styles such as Fino and Manzanilla. As a result, it develops rich, nutty flavors and a darker color over time due to the combined effects of oxidation and evaporation.

The oxidative aging process is crucial in creating the intense, complex profile that Oloroso is known for, as it is exposed to air throughout its maturation. While Amontillado also has an element of oxidative aging, it begins as a Fino and is then subjected to further aging without the flor, but it generally does not reach the same alcohol levels as Oloroso. Therefore, Oloroso stands out as the Sherry style associated with higher alcohol content due to its distinctive aging characteristics.