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%).
Or bâtonnage, as it is called in French, is the once fashionable winemaking operation of mixing up the lees in a barrel, cask, tank or vat with the wine resting on them. It is an optional addition to the process of lees contact and is often employed, particularly for whites which have undergone barrel fermentation. Usually done with a stick. Stirring up the lees in the barrel also effects oak flavour.
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.
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.
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.
Traditional Bordeaux measure of wine volume, once a large woodes cask holding 900 lit., or 252 imperial wine gallons, the equivalent of four barriques.
The heart of the Burgundy wine region in eastern France in the form of an escarpment supporting a narrow band of vineyards for nearly 50km/30miles southwards from Dijon. Viticulturally it is divided into two sectors, the Côte de Nuits and the Côte de Beaune.
The most valuable category of white wines made from the ripest grapes on the best sites of the Wachau in Austria. The category is named after the green lizard that basks in the sun on the Wachau's steep stone terraces above the river Danube. Alcohol levels in the unchaptalized Grüner Veltliners and Rieslings that qualify must be more than 12.5%.
Increasingly fashionable and aims at reducing the exposure of must and wine to oxygen in the winery by minimizing or eliminating practices such as racking, lees stirring, and the use of new oak barrels.
Small town in the Tuscan Maremma made famous by Marchese Mario Incisa della Rocchetta, who planted Cabernet Sauvignon vines for a house wine a early as the 1949s an his San Guido estate, labelling the resulting wine Sassicaia.
Widely misused term meaning strictly the climate within a defined and usually very restricted space or position. In viticulture, it might be at specific positions between rows of vines, or distances above the ground.
The general term used by winemakers to describe the harmless crystalline deposits that separate from wines during fermentation and ageing. The principal component of this deposit is potassium acid tartrate, the potassium salt of tartaric acid, which has therefore given rise to the name.
Italian term applied to DOC wines which are deemed superior because of their higher minimum alcoholic strength, usually by a half or one per cent, a longer period of ageing before commercial release, or a lower maximum permited yield, or all three.
In white winemaking, the pomace is the sweet, pale brownish-green mass of grape skins, stems, seeds and pulp left after pressing. In red winemaking, the pomace is coloured blackish red.
The mountain of Reims, or the forested high ground between the Champagne towns of Reims and Épernay. Ist lower slopes are famed for the quality of Pinot Noir base wine they produce.
French word for various systems of pumping over. In winemaking terms it is the pumping of the liquid in the fermentation tank over the cap of skins and solids during the red wine fermentation.
