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Pinot gris 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 (gris meaning “gray” in French) but the grapes can have a brownish pink to black and even white appearance. The word pinot, which comes from the word meaning “pine cone” in French, 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 orange wine. The clone of Pinot gris grown in Italy is known as Pinot grigio.
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Pinot gris is grown around the globe with the “spicy” full-bodied Alsatian and lighter-bodied, more acidic Italian styles being most widely recognized. The Alsatian style, often duplicated in New World wine regions such as Marlborough, Tasmania, Australia, Washington, and Oregon, tend to have moderate to low acidity, higher alcohol levels and an almost “oily” texture that contributes to the full-bodied nature of the wine. The flavors can range from ripe tropical fruit notes of melon and mango to some botrytis-influenced flavors. In Italy, Pinot grigio grapes are often harvested early to retain the refreshing acidity and minimize some of the overt-fruitiness of the variety, creating a more neutral flavor profile. This style is often imitated in other Old World wine regions, such as Germany where the grape is known as Ruländer. Pinot gris has been known since the Middle Ages in the Burgundy region, where it was probably called Fromenteau. It spread from Burgundy, along with Pinot noir, arriving in Switzerland by 1300. The grape was reportedly a favorite of the Emperor Charles IV, who had cuttings imported to Hungary by Cistercian monks: the brothers planted the vines on the slopes of Badacsony bordering Lake Balaton in 1375.
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The vine soon after developed the name Szürkebarát meaning “grey monk.” In 1711, a German merchant, named Johann Seger Ruland (re)discovered a grape growing wild in the fields of the Palatinate. The subsequent wine he produced became known as Ruländer and the vine was later discovered to be Pinot gris. Until the 18th and 19th century, the grape was a popular planting in Burgundy and Champagne but poor yields and unreliable crops caused the grape to fall out of favor in those areas. The same fate nearly occurred in Germany, but vine breeders in the early 20th century were able to develop clonal varieties that would produce a more consistent and reliable crop.
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Researchers at the University of California, Davis, have determined that Pinot gris has a remarkably similar DNA profile to Pinot noir and that the color difference is derived from a genetic mutation that occurred centuries ago. The leaves and the vines of both grapes are so similar that the coloration is the only aspect that differentiates the two. Around 2005, Pinot gris was enjoying increasing popularity in the marketplace, especially in its Pinot grigio incarnation and similar New World varietal wines. A major grape in Alsace, grown on 13.9% of the region’s vineyard surface in 2006, the varietal Pinot-gris d’Alsace (fr) is markedly different from Pinot gris found elsewhere. The cool climate of Alsace and warm volcanic soils are particularly well suited for Pinot gris, with its dry autumns allowing plenty of time for the grapes to hang on the vines, often resulting in wines of very powerful flavours.
Pinot gris is one of the so-called noble grapes of Alsace, along with Riesling, Gewürztraminer, and Muscat, which may be used for varietal Alsace Grand Cru AOC and the late harvest wines Vendange Tardive and Sélection de Grains Nobles. Previously, the Pinot gris wines produced in Alsace were originally labeled Tokay d’Alsace. In the Middle Ages, the grape was popularized in the region by Hungarian traders who were introduced to the grape from Burgundy. During this time, Tokaji was one of the most popular and sought after wines on the market and the name was probably used to gain more prestige for the Alsatian wine. Pinot gris was believed to have been brought back to Alsace by General Lazarus von Schwendi after his campaign against the Turks in the 16th century. It was planted in Kientzheim under the name “Tokay”. However, the Pinot gris grape has no known genetic relations to the Furmint, Hárslevelű, Yellow Muscat and Orémus grapes that are traditionally used in Tokaji wine. In 1980, the European Economic Community passed regulations related to Protected designations of origin (PDOs), and when Hungary started negotiations for European Union membership, it became clear that the Tokay name would have to become a PDO for the Tokaj-Hegyalja region. Therefore, in 1993, an agreement was reached between the Hungary and the European Union to phase out the name Tokay from non-Hungarian wine. In the case of Alsace, Tokay Pinot Gris was adopted as an intermediate step, with the “Tokay” part to be eliminated in 2007. Many producers had implemented the change to plain Pinot Gris on their labels by the early 2000s, several years before the deadline.
Crushing is the process when gently squeezing the berries and breaking the skins to start to liberate the contents of the berries. Destemming is the process of removing the grapes from the rachis (the stem which holds the grapes). In traditional and smaller-scale wine making, the harvested grapes are sometimes crushed by trampling them barefoot or by the use of inexpensive small scale crushers. These can also destem at the same time. However, in larger wineries, a mechanical crusher/destemmer is used. The decision about destemming is different for red and white wine making. Generally when making white wine the fruit is only crushed, the stems are then placed in the press with the berries. The presence of stems in the mix facilitates pressing by allowing juice to flow past flattened skins. These accumulate at the edge of the press. For red winemaking, stems of the grapes are usually removed before fermentation since the stems have a relatively high tannin content; in addition to tannin they can also give the wine a vegetal aroma (due to extraction of 2-methoxy-3-isopropylpyrazine which has an aroma reminiscent of green bell peppers.) On occasion, the winemaker may decide to leave them in if the grapes themselves contain less tannin than desired. This is more acceptable if the stems have ‘ripened’ and started to turn brown. If increased skin extraction is desired, a winemaker might choose to crush the grapes after destemming. Removal of stems first means no stem tannin can be extracted. In these cases the grapes pass between two rollers which squeeze the grapes enough to separate the skin and pulp, but not so much as to cause excessive shearing or tearing of the skin tissues. In some cases, notably with “delicate” red varietals such as Pinot noir or Syrah, all or part of the grapes might be left uncrushed (called “whole berry”) to encourage the retention of fruity aromas through partial carbonic maceration.
Most red wines derive their color from grape skins (the exception being varieties or hybrids of non-vinifera vines which contain juice pigmented with the dark Malvidin 3,5-diglucoside anthocyanin) and therefore contact between the juice and skins is essential for color extraction. Red wines are produced by destemming and crushing the grapes into a tank and leaving the skins in contact with the juice throughout the fermentation (maceration).
It is possible to produce white (colorless) wines from red grapes by the fastidious pressing of uncrushed fruit. This minimizes contact between grape juice and skins (as in the making of Blanc de noirs sparkling wine, which is derived from Pinot noir, a red vinifera grape.) Most white wines are processed without destemming or crushing and are transferred from picking bins directly to the press. This is to avoid any extraction of tannin from either the skins or grapeseeds, as well as maintaining proper juice flow through a matrix of grape clusters rather than loose berries. In some circumstances winemakers choose to crush white grapes for a short period of skin contact, usually for three to 24 hours. This serves to extract flavor and tannin from the skins (the tannin being extracted to encourage protein precipitation without excessive Bentonite addition) as well as Potassium ions, which participate in bitartrate precipitation (cream of tartar).
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It also results in an increase in the pH of the juice which may be desirable for overly acidic grapes. This was a practice more common in the 1970s than today, though still practiced by some Sauvignon blanc and Chardonnay producers in California. In the case of rosé wines, the fruit is crushed and the dark skins are left in contact with the juice just long enough to extract the color that the winemaker desires. The must is then pressed, and fermentation continues as if the winemaker was making a white wine.
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Yeast is normally already present on the grapes, often visible as a powdery appearance of the grapes. The primary, or alcoholic fermentation can be done with this natural yeast, but since this can give unpredictable results depending on the exact types of yeast that are present, cultured yeast is often added to the must. One of the main problems with the use of wild ferments is the failure for the fermentation to go to completion, that is some sugar remains unfermented. This can make the wine sweet when a dry wine is desired. Frequently wild ferments lead to the production of unpleasant acetic acid (vinegar) production as a by product.
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