An instrument for measuring a refractive index, which is related to the amount by which the angle of a light wave is changed when passing through the boundary between two media. The amount of refraction is a convenient way to measure solute concentration of a solution and is widely used in viticultural and winemaking to follow the ripeness of grapes and changes during vinification.
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.
Is hard and supple, and most oaks have watertight wood, which has the simple advantage over other wood types used for cooperage of displaying a natural affinity with wine, imparting qualities and flavours that today's consumers appreciate as enhancing or complementing those of many wines.
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.
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.
A fortified wine made by adding brandy to arrest fermenting grape must which results in a wine, red and sometimes white, that is both sweet and high in alcohol.
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.
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.
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.
The most famous northern Rhône appellation of all, producing extremely limited quantities of seriously long-lived reds and about a third as much full-bodied dry white wine which some believe is even more distinguished. Hermitage was one of France's most famous wines in the 18th and 19th centuries when the name alone was sufficient to justify prices higher than any wine other than a first growth bordeaux.
One of six so-called Prädikats applying to German wine that has not been chaptalized, and designating-depending on growing region and grape variety-must weights between 67 and 82° Oechsle. As such, Kabinett designates the lightest end of the German wine spectrum, and Mosel Kabinetts that have residual sugar are often as low as 7 or 8% alcohol.
IP was developed as a concept in 1974, and major development has come from France, Germany and Switzerland. IP emphasizes a holistic approach to viticulture, by considering the vineyard as an "agro-ecosystem". The reduction of chemical inputs, especially nitrogen fertilizer and broad spectrum insecticides, is a first step.
In common viticultural terms, the offspring of two varieties of different species, as distinct from a cross between two varieties of the same species, which is also known as an intraspecific cross.
The result of breeding a new variety by crossing two vine varieties. If the varieties are of the same species, usually the European vinifera species, then the result may also be knowm a an intraspecific cross - Müller-Thurgau would be one example.
Dramatically situated hilltop town on the left bank of the upper Loire which lends ist name to one of the Loire's most famous, and famously variable, wines: racy, pungent, dry white Sauvignon Blanc.
