Sherry is fortified, oxidized, and maderized.
Sherry is fortified and undergoes some controlled oxidation. But Sherry is not maderized. Maderization means the wine was intentionally heated. The wine that is fortified, oxidized, and maderized, not to mention sometimes aged for decades, is Madeira. Arguably the world’s longest-lived wine, Madeira at its best is a wine of such spellbinding complexity it’s almost hard to fathom. Great Madeiras do not sit in your glass; they scream with tangy deliciousness. Madeira comes from a small cluster of steeply rugged volcanic islands, the largest and most important of which is also called Madeira—from ilha da madeira, “island of the woods.” Although Madeira and its tiny sister islands are geographically part of Africa (about 310 miles off the Moroccan coast), they are nonetheless a province of Portugal (about 620 miles to the northeast).