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.
Silicon dioxide (silica), a very common rock-forming mineral. It is seen as glassy, colourless grains in rocks such as granite and sandstone, producing sandy soils of low fertility. It also occurs as opaque white veins filling gashes in bedrocks, which weathering loosens into fragments that become the milky white pebbles seen in many vineyards soils.
Winemaking technique of fermenting grape juice or must in small barrels rather than in a larger fermentation vessel. The technique is used principally for white wines because of the difficulty of extracting through a barrel's small bung-hole the mass of skins and seeds which necessarily remains after red wine fermentation.
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%).
Qualitätswein is what POD wines are called in German. This is Germany's largest and lowest wine category and in practice includes all those wines once known as QbA. The grapes must originate in one of Germany's 13 official wine regions and reach minimum must weights.
Winemaking process with the aim of clarification and stabilization of a wine whereby a fining agent, one of a range of special materials, is added to coagulate or adsorb and precipitate quickly the colloids suspended in it.
Affects vines when air temperatures are high. Very high daytime temperatures, of more than 40°C/104°F, cause the vine to "shut down", or virtually cease photosynthesis, as the enzymes responsible can no longer work. High temperatures also lead to water stress, especially when accompained by bright sunshine, low humidity, and strong, dry winds.
Is a term used particularly in Burgundy for wine which qualifies for an appellation that coincides with the name of the village or commune in which the wine is made.
Meaning literally "yellow wine" in French, extraordinary style of wine made in France, mainly in the Jura region, using a technique similar to that used for making Sherry but without fortification.
Important French port on the Garonne River. Bordeaux gives ist name to a wine region that includes the vineyards of the Gironde département and, as such, the wine region that produces more top -quality wine than any other region.
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.
Is the uniquely steely, dry, age-worthy white wine of the most northern vineyards of Burgundy in north east France, made, like all fine whites Burgundy, from Chardonnay grapes.
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.
