Of a wine is ist total concentration of volatile acids, those naturally occuring organic acids of wines that are separable by distillation. Wine's most common volatile acid by far is acetic acid (more than 96%).
The most prestigious wine estate in Burgundy, based in Vosne-Romanée. The Domaine, as it is frequently called, is co-owned by the de Villaine and Leroy families and produces only Grand Cru wines.
Downy mildew attacks all green parts of the vine and young leaves are particularly susceptible. When severly affected, leaves will drop off. The loss of leaves reduces photosynthesis and thus causes delays in fruit ripening and, typically, levels of fruit sugars, vine reserves of carbohydrates, and anthocyanins are depressed.
Sometimes simply as botrytis, is the benevolent form of botrytis bunch rot, in which the Botrytis cinerea fungus attacks ripe, undamaged white wine grapes and, given the right weather, can result in extremely sweet grapes.
Named after the principal town of Nuits-St-Georges, this is the northern half of the escarpment of the Côte d'Or, producing the greatest red wines of Burgundy, from the Pinot Noir grape, and very occasional white wines.
Progressive winemaking operation which removes suspended and insoluble material from grape juice, or new wine, in which these solids are known as lees.
French term for racking, or moving clear wine off ist sediment and into a clean container. It can also be used for the wine serving process of decanting.
Stands for Denominazione di Origine Controllata e Garantita, a legal category established in Italy in 1963 for its highest-quality wines, at the same time as its DOC was created as an Italian version of the French appellation contrôllée.
A common plant acid, abundant in some fleshy fruits such as lemons, but rare in grapes. The grape is unusual among fruits in that its major acid is tartaric acid, rather than citric acid, whose concentration in the juice of most grape varieties is only about one-twentieth that of tartaric acid.
One of the two principal organic acids of grapes and wines. Ist name comes from malum, Latin for apple, the fruit in which it was first identified. Present in nearly all fruits and berries.
Often abbreviated to MLF or malo, is the conversion of stronger malic acid anturally present in new wine into lactic acid (which has lower acidity) and carbon dioxide.
Term much used in the wine world, initially smoewhat patronizingly but with increasing admiration in the last quarter of the 20th century as the New World's share of global exports rose from 3 to 23%, to distinguish the colonies established as a result of the longer voyages in the 15th century.
Very large group of highly reactive chemical compounds of which phenol is the basic building block. These include many natural colour pigments such as the anthocyanins of fruit and dark-skinned grapes, most natural vegetable tannins such as occur in grapes, and many flavour compounds.
Term used on labels which has very specific meaning in the Unitet States, where an estate-bottled wine must come from the winery's own vineyards or those on which the winery has a long lease; both vineyards and winery must be in the geographical area specified an the label.
Ancient word for steeping a material in liquid with or without a kneading action to separate the softened parts of the material from the harder ones. This important process in red winemaking involves extracion of the phenolics or anthocyanins, other glycosides, including flavour precursors from the grape skins, seeds, and stem fragments into the juice or new wine.
German term for sweet reserve, the unfermented or part-fermented must much used in the 1970s and 1980s to sweeten all but the finest or driest German wines.
