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A grape is a fruit, botanically a berry, of the deciduous woody vines of the flowering plant genus Vitis. Grapes are a non-climacteric type of fruit, generally occurring in clusters.
Pisco is a colorless or yellowish-to-amber colored spirit produced in winemaking regions of Peru and Chile. Made by distilling fermented grape juice into a high-proof spirit, it was developed by 16th-century Spanish settlers as an alternative to orujo, a pomace brandy that was being imported from Spain. It had the advantages of being produced from abundant domestically grown fruit and reducing the volume of alcoholic beverages transported to remote locations.
Icewine is a type of dessert wine produced from grapes that have been frozen while still on the vine. The sugars and other dissolved solids do not freeze, but the water does, allowing for a more concentrated grape juice to develop. The grapes' must is then pressed from the frozen grapes, resulting in a smaller amount of more concentrated, very sweet juice. With icewines, the freezing happens before the fermentation, not afterwards. Unlike the grapes from which other dessert wines are made, such as Sauternes, Tokaji, or Trockenbeerenauslese, icewine grapes should not be affected by Botrytis cinerea or noble rot, at least not to any great degree. Only healthy grapes keep in good shape until the opportunity arises for an icewine harvest, which in extreme cases can occur after the New Year, on a northern hemisphere calendar. This gives icewine its characteristic refreshing sweetness balanced by high acidity. When the grapes are free of Botrytis, they are said to come in "clean". This results in a very complex and sweet wine. Much icewine is made from the grapes Riesling, Vidal, Cabernet Franc and Cabernet Sauvignon, but there is also icewine made from Shiraz, Merlot, Sangiovese and others.
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.
Fruit wines are fermented alcoholic beverages made from a variety of base ingredients ; they may also have additional flavors taken from fruits, flowers, and herbs. This definition is sometimes broadened to include any alcoholic fermented beverage except beer. For historical reasons, mead, cider, and perry are also excluded from the definition of fruit wine.
Carbonic maceration is a winemaking technique, often associated with the French wine region of Beaujolais, in which whole grapes are fermented in a carbon dioxide rich environment before crushing. Conventional alcoholic fermentation involves crushing the grapes to free the juice and pulp from the skin with yeast serving to convert sugar into ethanol. Carbonic maceration ferments most of the juice while it is still inside the grape, although grapes at the bottom of the vessel are crushed by gravity and undergo conventional fermentation. The resulting wine is fruity with very low tannins. It is ready to drink quickly but lacks the structure for long-term aging. In extreme cases such as Beaujolais nouveau, the period between picking and bottling can be less than six weeks.
Grappa is an alcoholic beverage: a fragrant, grape-based pomace brandy of Italian origin that contains 35 to 60 percent alcohol by volume. Grappa is a protected name in the European Union.
Red wine is a type of wine made from dark-colored grape varieties. The color of the wine can range from intense violet, typical of young wines, through to brick red for mature wines and brown for older red wines. The juice from most purple grapes is greenish-white, the red color coming from anthocyan pigments present in the skin of the grape. Much of the red wine production process involves extraction of color and flavor components from the grape skin.
White wine is a wine that is fermented without skin contact. The colour can be straw-yellow, yellow-green, or yellow-gold. It is produced by the alcoholic fermentation of the non-coloured pulp of grapes, which may have a skin of any colour. White wine has existed for at least 4,000 years.
A winemaker or vintner is a person engaged in winemaking. They are generally employed by wineries or wine companies, where their work includes:
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.
Grape juice is obtained from crushing and blending grapes into a liquid. In the wine industry, grape juice that contains 7–23 percent of pulp, skins, stems and seeds is often referred to as must. The sugars in grape juice allow it to be used as a sweetener, and fermented and made into wine, brandy, or vinegar.
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.
Prune juice is a fruit juice derived from prunes that have been rehydrated. It is a mass-produced product that is often produced using a hot extraction method, and juice concentrate is typically produced using a low-temperature extraction method. It may be used as a dietary supplement to act as a laxative. It is also sometimes used as a flavor enhancer in tobacco products. It is an ingredient in many cocktails, such as the Purple Dragon, or Constipolitan.
The following outline is provided as an overview of and topical guide to wine:
The United Kingdom is a major consumer of wine, although a minor grower and producer. Wine production in the UK has historically been perceived as less than ideal due to the cold climate, but warmer summers and grapes adapted to these conditions have played a role in increasing investment and sale of wines. Most is English sparkling wine, from vineyards across Southern England and sparkling wine from Wales where the climate is warmer than that of northern areas. Vineyards are becoming more commonplace in counties such as Essex, Sussex and Kent, where more varieties of wine can be produced due to the drier and warmer climate.
Natural wine refers to a generalized movement among winemakers for production of wine using simple or traditional methods. Although there is no uniform definition of natural wine, it is usually produced without the use of pesticides or herbicides and with few or no additives. Typically, natural wine is produced on a small scale using traditional rather than industrial techniques and fermented with native yeast. In its purest form, natural wine is simply unadulterated fermented grape juice with no additives in the winemaking process. Other terms for the product include low-intervention wine, raw wine, and naked wine.
This glossary of winemaking terms lists some of terms and definitions involved in making wine, fruit wine, and mead.
In viticulture, ripeness is the completion of the ripening process of wine grapes on the vine which signals the beginning of harvest. What exactly constitutes ripeness will vary depending on what style of wine is being produced and what the winemaker and viticulturist personally believe constitutes ripeness. Once the grapes are harvested, the physical and chemical components of the grape which will influence a wine's quality are essentially set so determining the optimal moment of ripeness for harvest may be considered the most crucial decision in winemaking.
Yeast assimilable nitrogen or YAN is the combination of free amino nitrogen (FAN), ammonia (NH3) and ammonium (NH4+) that is available for a yeast, e.g. the wine yeast Saccharomyces cerevisiae, to use during fermentation. Outside of the fermentable sugars glucose and fructose, nitrogen is the most important nutrient needed to carry out a successful fermentation that doesn't end prior to the intended point of dryness or sees the development of off-odors and related wine faults. To this extent winemakers will often supplement the available YAN resources with nitrogen additives such as diammonium phosphate (DAP).
References
- 1 2 Berger, Dan, Wines & Vines (March 2006). Mega Purple
- ↑ Brown, Los Angeles Times, Corie (March 28, 2009). "What's really in that wine?". Archived from the original on November 24, 2009. Retrieved August 26, 2009.
- ↑ Thomas, Gourmet, Tara Q. (March 24, 2008). "What's in a wine?". Archived from the original on March 5, 2009. Retrieved August 26, 2009.
- ↑ Williams, John, sarep.ucdavis.edu Science of Sustainable Viticulture Archived 2015-06-06 at the Wayback Machine