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Sauvignon blanc is a green-skinned grape variety that originates from the Bordeaux region of France. The grape most likely gets its name from the French words sauvage ("wild") and blanc ("white") due to its early origins as an indigenous grape in South West France. It is possibly a descendant of Savagnin. Sauvignon blanc is planted in many of the world's wine regions, producing a crisp, dry, and refreshing white varietal wine. The grape is also a component of the famous dessert wines from Sauternes and Barsac. Sauvignon blanc is widely cultivated in France, Chile, Romania, Canada, Australia, New Zealand, South Africa, Bulgaria, the states of Washington and California in the US. Some New World Sauvignon blancs, particularly from California, may also be called "Fumé Blanc", a marketing term coined by Robert Mondavi in reference to Pouilly-Fumé.
Riesling is a white grape variety which originated in the Rhine region. Riesling is an aromatic grape variety displaying flowery, almost perfumed, aromas as well as high acidity. It is used to make dry, semi-sweet, sweet, and sparkling white wines. Riesling wines are usually varietally pure and are seldom oaked. As of 2004, Riesling was estimated to be the world's 20th most grown variety at 48,700 hectares, but in terms of importance for quality wines, it is usually included in the "top three" white wine varieties together with Chardonnay and Sauvignon blanc. Riesling is a variety which is highly "terroir-expressive", meaning that the character of Riesling wines is greatly influenced by the wine's place of origin.
Pinot gris, pinot grigio or Grauburgunder is a white wine grape variety of the species Vitis vinifera. Thought to be a mutant clone of the pinot noir variety, it normally has a grayish-blue fruit, accounting for its name but the grapes can have a brownish pink to black and even white appearance. The word pinot could have been given to it because the grapes grow in small pine cone-shaped clusters. The wines produced from this grape also vary in color from a deep golden yellow to copper and even a light shade of pink, and it is one of the more popular grapes for skin-contact wine.
Late harvest wine is wine made from grapes left on the vine longer than usual. Late harvest is usually an indication of a sweet dessert wine, such as late harvest Riesling. Late harvest grapes are often more similar to raisins, but have been naturally dehydrated while on the vine.
Viognier is a white wine grape variety. It is the only permitted grape for the French wine Condrieu in the Rhône Valley. Outside of the Rhône, Viognier can be found in regions of North and South America as well as Australia, New Zealand, the Cape Winelands in South Africa and Israel. In some wine regions, the variety is co-fermented with the red wine grape Syrah where it can contribute to the color and aroma of the wine.
Aligoté is a white grape used to make dry white wines, especially in the Burgundy region of France where it was first recorded in the 18th century. Since it is tolerant to cold, this variety is also cultivated in Eastern European countries. In 2004, it was the 22nd most planted vine variety in the world at 45,000 hectares.
Mourvèdre is a red wine grape variety grown in many regions around the world including the Rhône and Provence regions of France, the Valencia and Jumilla denominaciones de origen of Spain, as well as the Balearic Islands, California and Washington and the Australian regions of South Australia and New South Wales, as well as South Africa. In addition to making red varietal wines, Mourvèdre is a prominent component in "GSM" blends. The variety is also used to make rosé and port-style fortified wines.
Agiorgitiko is a red Greek wine grape variety that, as of 2012, was the most widely planted red grape variety in Greece, ahead of Xynomavro. The grape has traditionally been grown in the Nemea region of the Peloponnese but can be found throughout the country including Attikí (Attica) and Makedonía (Macedonia).
Assyrtiko or Asyrtiko is a white Greek wine grape indigenous to the island of Santorini. Assyrtiko is widely planted in the arid volcanic-ash-rich soil of Santorini and other Aegean islands, such as Paros. It is also found on other scattered regions of Greece such as Chalkidiki. Assyrtiko is also being grown in Clare Valley, South Australia, and at the Abbey of New Clairvaux in Northern California since 2011. The original Assyrtiko cuttings were imported in the USA in 1948 by Harold Olmo, grape breeder at the University of California, Davis, where they were stored until the abbey of New Clairvaux took interest in the early 2000s.
Sauternes is a French sweet wine from the Sauternais region of the Graves section in Bordeaux. Sauternes is made from Sémillon, Sauvignon blanc, and Muscadelle grapes that have been affected by Botrytis cinerea, also known as noble rot. This causes the grapes to become partially raisined, resulting in concentrated and distinctively flavored wines. Due to its climate, Sauternes is one of the few wine regions where infection with noble rot is a frequent occurrence. Even so, production is a hit-or-miss proposition, with widely varying harvests from vintage to vintage. Wines from Sauternes, especially the Premier Cru Supérieur estate Château d'Yquem, can be very expensive, largely due to the very high cost of production. Barsac lies within Sauternes and is entitled to use either name. Somewhat similar but less expensive and typically less-distinguished wines are produced in the neighboring regions of Monbazillac, Cérons, Loupiac and Cadillac. In the United States, there is a semi-generic label for sweet white dessert wines known as sauterne without the "s" at the end and uncapitalized.
The process of fermentation in winemaking turns grape juice into an alcoholic beverage. During fermentation, yeasts transform sugars present in the juice into ethanol and carbon dioxide. In winemaking, the temperature and speed of fermentation are important considerations as well as the levels of oxygen present in the must at the start of the fermentation. The risk of stuck fermentation and the development of several wine faults can also occur during this stage, which can last anywhere from 5 to 14 days for primary fermentation and potentially another 5 to 10 days for a secondary fermentation. Fermentation may be done in stainless steel tanks, which is common with many white wines like Riesling, in an open wooden vat, inside a wine barrel and inside the wine bottle itself as in the production of many sparkling wines.
The harvesting of wine grapes (Vintage) is one of the most crucial steps in the process of wine-making. The time of harvest is determined primarily by the ripeness of the grape as measured by sugar, acid and tannin levels with winemakers basing their decision to pick based on the style of wine they wish to produce. The weather can also shape the timetable of harvesting with the threat of heat, rain, hail, and frost which can damage the grapes and bring about various vine diseases. In addition to determining the time of the harvest, winemakers and vineyard owners must also determine whether to use hand pickers or mechanical harvesters. The harvest season typically falls between August & October in the Northern Hemisphere and February & April in the Southern Hemisphere. With various climate conditions, grape varieties, and wine styles the harvesting of grapes could happen in every month of the calendar year somewhere in the world. In the New World it is often referred to as the crush.
Piemonte wine is the range of Italian wines made in the region of Piedmont in the northwestern corner of Italy. The best-known wines from the region include Barolo and Barbaresco. They are made from the Nebbiolo grape. These wines are ideal for storage and a well-aged Barolo for instance may leave a feeling of drinking velvet because the tannins are polished and integrated more and more into the wine. As the wine matures the colour becomes more brownish and rust-red.
The Loire Valley wine region includes the French wine regions situated along the Loire River from the Muscadet region near the city of Nantes on the Atlantic coast to the region of Sancerre and Pouilly-Fumé just southeast of the city of Orléans in north central France. In between are the regions of Anjou wine, Saumur, Bourgueil, Chinon, and Vouvray. The Loire Valley itself follows the river through the Loire province to the river's origins in the Cévennes but the majority of the wine production takes place in the regions noted above. The area includes 87 appellations under the Appellation d'origine contrôlée (AOC), Vin Délimité de Qualité Superieure (VDQS) and Vin de pays systems. While the majority of production is white wine from the Chenin blanc, Sauvignon blanc and Melon de Bourgogne grapes, there are red wines made from Cabernet franc. In addition to still wines, rosé, sparkling and dessert wines are also produced. With Crémant production throughout the Loire, it is the second largest sparkling wine producer in France after Champagne. Among these different wine styles, Loire wines tend to exhibit characteristic fruitiness with fresh, crisp flavors-especially in their youth. The Loire Valley has a long history of winemaking dating back to the 1st century. In the High Middle Ages, the wines of the Loire Valley were the most esteemed wines in England and France, even more prized than those from Bordeaux.
Friuli-Venezia Giulia wine is wine made in the northeastern Italian region of Friuli-Venezia Giulia. Once part of the Venetian Republic and with sections under the influence of the Austro-Hungarian Empire for some time, the wines of the region have noticeable Slavic and Germanic influences. There are 11 Denominazione di origine controllata (DOC) and 3 Denominazione di Origine Controllata e Garantita (DOCG) in the Friuli-Venezia Giulia area. The region has 3 Indicazione Geografica Tipica (IGT) designations Alto Livenza, delle Venezie and Venezia Giulia. Nearly 62% of the wine produced in the region falls under a DOC designation. The area is known predominantly for its white wines which are considered some of the best examples of Italian wine in that style. Along with the Veneto and Trentino-Alto Adige/Südtirol, the Friuli-Venezia Giulia forms the Tre Venezie wine region which ranks with Tuscany and Piedmont as Italy's world class wine regions.
Ancient Rome played a pivotal role in the history of wine. The earliest influences on the viticulture of the Italian peninsula can be traced to ancient Greeks and the Etruscans. The rise of the Roman Empire saw both technological advances in and burgeoning awareness of winemaking, which spread to all parts of the empire. Rome's influence has had a profound effect on the histories of today's major winemaking regions in France, Germany, Italy, Portugal and Spain.
The annual growth cycle of grapevines is the process that takes place in the vineyard each year, beginning with bud break in the spring and culminating in leaf fall in autumn followed by winter dormancy. From a winemaking perspective, each step in the process plays a vital role in the development of grapes with ideal characteristics for making wine. Viticulturalists and vineyard managers monitor the effect of climate, vine disease and pests in facilitating or impeding the vine's progression from bud break, flowering, fruit set, veraison, harvesting, leaf fall and dormancy-reacting if need be with the use of viticultural practices like canopy management, irrigation, vine training and the use of agrochemicals. The stages of the annual growth cycle usually become observable within the first year of a vine's life. The amount of time spent at each stage of the growth cycle depends on a number of factors-most notably the type of climate and the characteristics of the grape variety.
The acids in wine are an important component in both winemaking and the finished product of wine. They are present in both grapes and wine, having direct influences on the color, balance and taste of the wine as well as the growth and vitality of yeast during fermentation and protecting the wine from bacteria. The measure of the amount of acidity in wine is known as the “titratable acidity” or “total acidity”, which refers to the test that yields the total of all acids present, while strength of acidity is measured according to pH, with most wines having a pH between 2.9 and 3.9. Generally, the lower the pH, the higher the acidity in the wine. However, there is no direct connection between total acidity and pH. In wine tasting, the term “acidity” refers to the fresh, tart and sour attributes of the wine which are evaluated in relation to how well the acidity balances out the sweetness and bitter components of the wine such as tannins. Three primary acids are found in wine grapes: tartaric, malic, and citric acids. During the course of winemaking and in the finished wines, acetic, butyric, lactic, and succinic acids can play significant roles. Most of the acids involved with wine are fixed acids with the notable exception of acetic acid, mostly found in vinegar, which is volatile and can contribute to the wine fault known as volatile acidity. Sometimes, additional acids, such as ascorbic, sorbic and sulfurous acids, are used in winemaking.
Pressing in winemaking is the process where the juice is extracted from the grapes with the aid of a wine press, by hand, or even by the weight of the grape berries and clusters. Historically, intact grape clusters were trodden by feet but in most wineries today the grapes are sent through a crusher/destemmer, which removes the individual grape berries from the stems and breaks the skins, releasing some juice, prior to being pressed. There are exceptions, such as the case of sparkling wine production in regions such as Champagne where grapes are traditionally whole-cluster pressed with stems included to produce a lighter must that is low in phenolics.
Olmo grapes are wine and table grape varieties produced by University of California, Davis viticulturist Dr. Harold Olmo. Over the course of his nearly 50-year career, Dr. Olmo bred a wide variety of both grapes by means of both crossing varieties from the same species or creating hybrid grapes from cultivars of different Vitis species.
References
- 1 2 Jancis Robinson Vines, Grapes & Wine pg 226 Octopus Publishing 1986 ISBN 978-1-85732-999-5
- ↑ R. Irvine & W. Clore The Wine Project pg 436 Sketch Publications 1997 ISBN 0-9650834-9-7
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