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Barrel Fermented: Denotes wine that has been fermented in small casks (usually 55-gallon oak barrels) instead of larger tanks. Advocates believe that barrel fermentation contributes greater harmony between the oak and the wine, increases body and adds complexity, texture and flavor to certain wine types. Its liabilities are that more labor is required and greater risks are involved. It is mainly used for whites.
Lees: Sediment—dead yeast cells, grapeseeds, stems, pulp and tartrates (harmless tartaric acid crystals)—remaining in a barrel or tank during and after fermentation. Immediately following fermentation, wine should be racked off of the gross lees, the large particulate matter such as seeds, skins and stems, which are rich in spoilage organisms. The wine may be aged for an extended period on the fine lees, however, in what's called "sur lie" aging. Fine lees, the dead yeast cells leftover from fermentation, can enhance an aging wine with added richness, flavor and aroma complexity, and can also bind with excess tannins.
Smoky: Usually the result of fermenting or aging in oak barrel, a smoky quality can add flavor and aromatic complexity to a wine.
Élevage: French term for the progression of wine between fermentation and bottling. Comparable to the term "raising" in English; think of élevage as a wine's adolescence or education. The raw fermented juice is shaped during this period into something resembling its final form, through techniques such as barrel aging, filtering and fining. Good winemaking decisions during élevage can help the juice achieve its full potential; bad decisions can leave it flawed.
Microoxygenation: This technique, used almost exclusively on red wines, allows winemakers to control the amount of oxygen that wines in tank are exposed to. The apparatus involves chambers connected by tubes and valves to an oxygen tank. Small, measured amounts of oxygen are allowed to pass through the wine via a porous stone or ceramic plate at or near the base of the tank. The benefits of this type of oxygen exposure include prevention of oxidation and reduction as well as promotion of healthy yeast cultures, which prevent stuck fermentations. Microoxygenation is also believed to soften tannins and, in conjunction with the use of oak chips, is frequently practiced as an alternative to oak barrel aging.
Vinification: Loosely synonymous with "winemaking," the act of creating wine from grapes, beginning with the crushing of grapes at harvest and ending when the fermented juice is barreled.
Winemaking: Largely synonymous with "Vinification," winemaking is the process by which harvested grapes are crushed, fermented (and otherwise manipulated through yeast inoculations, temperature control, punch-downs, pump-overs, racking, oak-chip additions, filtering, etc.), aged in barrel, steel tank or other vessel, and finally bottled.
Sherry: Sherry is a fortified wine made in Jerez, Spain, most often from the Palomino grape but also from the Pedro Ximénez and Moscatel varieties. Following fermentation, the wine is fortified with distilled wine spirit, up to the minimum strength of 15.5 percent alcohol. The fortified wine is then usually aged in oak barrels arranged in a solera system of multiple vintages, and which may include more than a hundred vintages of Sherry blended together. Sherries may be classified by their quality, age, sweetness and or alcohol contents into categories which include fino, manzanilla, amontillado, oloroso, cream, etc.
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