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.
Adapted by the champagne industry for wines made without (much) added sweetening or dosage. The upper limit for the resiudual sugar of a brut champagne has been reduced from 15 to 12 g/l.
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 general French term both for grape pomace and, more widely, for pomace brandy. It is used to distinguish the product from a fine, which may be made by distilling local wine. Most traditional wine regions make marc from the pomace, grape skins, and pips left after pressing.
Widely used French term for a specialist wine waiter or wine steward. The sommelier's job is to ensure that any wine ordered is served correctly and, ideally, to advise on the individual characteristics of every wine on the establishment's wine list and on food and wine matching.
Or insert, planks of wood, usually oak, placed in a stainless steel tank and held in position by a metal framework, are a way of imparting oak flavour to wine more cheaply than by fermenting or ageing in barrels since the staves are easily replaced.
Appellation abutting Gevrey-Chambertin in the Côte de Nuits district of Burgundy, producing red wines of a similar style to ist neighbour, though currently of lesser fame.
Coupage in French, is a practice that was once more distrusted than understood. In fact almost all of the world's finest wines are made by blending the contents of different vats and different barrels.
Translates directly from French as a wine that is naturally sweet. Vins doux naturels are made by mutage, by artificially arresting the conversion of grape sugar to alcohol by adding spirit before fermentation is complete.
Town north of Perpignan in southern France that gives ist name to two of the biggest appellations of Roussillon, Rivesaltes and Muscat de Rivesaltes, both of them vins doux naturels.
White winemaking technique wheereby the grapes are not subjacted to destemming and bunches of ripe grapes are pressed whole, with the stems used as conduits for what can often be particularly viscous juice.
Is French for "old vines". The term is used widely on wine labels-as is vinhas velhas (Portugal), alte Reben (Germany)-in the hope that potential buyers are aware that wine quality is often associated with senior vine age.
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.
An element that is extremely important in wine production. The addition of sulfur dioxide during crushing and pressing deactivates enzymes that catalyse oxidation, which leads to juice browning and modification of aromas and flavours, which is why it is often added to freshly picked grapes in the salt form of metabisulfite. (The compound is widely, often more liberally, used in the preparation of other foods and drinks, particularly in fruit juices and dried fruits).
Widely used in filtration, is a naturally occuring, highly porous, chalky textured sedimentary rock made mainly of silica and consisting of fossilized remains of diatoms, a type of hard-shelled algae.