Winemaking, wine-making, or vinification is the production of wine, starting with the selection of the fruit, its fermentation into alcohol, and the bottling of the finished liquid. The history of wine-making stretches over millennia. There is evidence that suggests that the earliest wine production took place in Georgia and Iran around 6000 to 5000 B.C. The science of wine and winemaking is known as oenology. A winemaker may also be called a vintner. The growing of grapes is viticulture and there are many varieties of grapes.
Viognier is a white wine grape variety. It is the only permitted grape for the French wine Condrieu in the Rhône Valley.
Terroir is a French term used to describe the environmental factors that affect a crop's phenotype, including unique environment contexts, farming practices and a crop's specific growth habitat. Collectively, these contextual characteristics are said to have a character; terroir also refers to this character.
Chaptalization is the process of adding sugar to unfermented grape must in order to increase the alcohol content after fermentation. The technique is named after its developer, the French chemist Jean-Antoine-Claude Chaptal. This process is not intended to make the wine sweeter, but rather to provide more sugar for the yeast to ferment into alcohol.
Biodynamic wines are wines made employing the biodynamic methods both to grow the fruit and during the post-harvest processing. Biodynamic wine production uses organic farming methods while also employing soil supplements prepared according to Rudolf Steiner's formulas, following a planting calendar that depends upon astrological configurations, and treating the earth as "a living and receptive organism."
Malolactic conversion is a process in winemaking in which tart-tasting malic acid, naturally present in grape must, is converted to softer-tasting lactic acid. Malolactic fermentation is most often performed as a secondary fermentation shortly after the end of the primary fermentation, but can sometimes run concurrently with it. The process is standard for most red wine production and common for some white grape varieties such as Chardonnay, where it can impart a "buttery" flavor from diacetyl, a byproduct of the reaction.
Wine fraud relates to the commercial aspects of wine. The most prevalent type of fraud is one where wines are adulterated, usually with the addition of cheaper products and sometimes with harmful chemicals and sweeteners.
The Australian wine industry is one of the world's largest exporters of wine, with approximately 800 million out of the 1.2 to 1.3 billion litres produced annually exported to overseas markets. The wine industry is a significant contributor to the Australian economy through production, employment, export, and tourism.
The glossary of wine terms lists the definitions of many general terms used within the wine industry. For terms specific to viticulture, winemaking, grape varieties, and wine tasting, see the topic specific list in the "See also" section below.
The following outline is provided as an overview of and topical guide to wine:
Mega Purple is a grape juice concentrate by Vie-Del Company of Fresno, California. It is used as a food additive. The process used for producing the additive is proprietary. Based on the descriptions of effects to wines by winemakers it is likely produced by a series of processes such as vacuum distillation, fractional distillation, and solvent extraction. The product is one of a series of concentrates marketed as kosher additives for food with names such as Mega "Cherry Shade" Grape Juice Concentrate, Mega Purple Grape Juice Concentrate, Mega Red Grape Juice Concentrate
Dominio de Pingus is a Spanish winery located in Quintanilla de Onésimo in the Province of Valladolid with vineyards in La Horra area of the Ribera del Duero region. The estate's flagship wine, Pingus, is considered a "cult wine", sold at extremely high prices while remaining very inaccessible, and commands an average price of $811 per bottle.
Old World wine refers primarily to wine made in Europe but can also include other regions of the Mediterranean basin with long histories of winemaking such as North Africa and the Near East. The phrase is often used in contrast to "New World wine" which refers primarily to wines from New World wine regions such as the United States, Australia, South America and South Africa. The term "Old World wine" does not refer to a homogeneous style with "Old World wine regions" like Austria, France, Georgia, Italy, Portugal, and Spain each making vastly different styles of wine even within their own borders. Rather, the term is used to describe general differences in viticulture and winemaking philosophies between the Old World regions where tradition and the role of terroir lead versus the New World where science and the role of the winemaker are more often emphasized. In recent times, the globalization of wine and advent of flying winemakers have lessened the distinction between the two terms with winemakers in one region being able to produce wines that can display the traits of the other region—i.e. an "Old World style" wine being produced in a New World wine region like California or Chile and vice versa.
This glossary of winemaking terms lists some of terms and definitions involved in making wine, fruit wine, and mead.
Orange wine, also known as skin-contact white wine, skin-fermented white wine, or amber wine, is a type of wine made from white wine grapes where the grape skins are not removed but stay in contact with the juice for days or even months, as is more typical with red wines. This contrasts with conventional white wine production, which involves crushing the grapes and quickly moving the juice off the skins into the fermentation vessel. The skins contain color pigment, phenols and tannins that would normally be considered undesirable for white wines, while for red wines skin contact and maceration is a vital part of the winemaking process that gives red wine its color, flavor, and texture. Orange wines tend to be natural wines.
The values embodied in cultural heritage are identified in order to assess significance, prioritize resources, and inform conservative-restorative decision-making. It is recognised that values may compete and change over time, and that heritage may have different meanings for different stakeholders.
Kvevri or Qvevri - also known as Ch'uri in Western Georgia - are large earthenware vessels used for the fermentation, storage and ageing of traditional Georgian wine. Resembling large, egg-shaped amphorae without handles, they are either buried below ground or set into the floors of large wine cellars. Kvevris vary in size: volumes range from 20 litres to around 10,000; 800 is typical.
Wine is a complex mixture of chemical compounds in a hydro-alcoholic solution with a pH around 4. The chemistry of wine and its resultant quality depend on achieving a balance between three aspects of the berries used to make the wine: their sugar content, acidity and the presence of secondary compounds. Vines store sugar in grapes through photosynthesis, and acids break down as grapes ripen. Secondary compounds are also stored in the course of the season. Anthocyanins give grapes a red color and protection against ultraviolet light. Tannins add bitterness and astringency which acts to defend vines against pests and grazing animals.
The history of the wine press and of pressing is nearly as old as the history of wine itself with the remains of wine presses providing some of the longest-serving evidence of organised viticulture and winemaking in the ancient world. The earliest wine press was probably the human foot or hand, crushing and squeezing grapes into a bag or container where the contents would ferment.
