Merlot
Merlot is a dark-blue-colored wine grape variety that is used as both a blending grape and for varietal wines. The name Merlot is thought to be a diminutive of merle, the French name for the blackbird, probably a reference to the color of the grape. Its softness and "fleshiness", combined with its earlier ripening, make Merlot a popular grape for blending with the sterner, later-ripening Cabernet Sauvignon, which tends to be higher in tannin.
Along with Cabernet Sauvignon, Cabernet Franc, Malbec, and Petit Verdot, Merlot is one of the primary grapes used in Bordeaux wine, and it is the most widely planted grape in the Bordeaux wine regions. Merlot is also one of the most popular red wine varietals in many markets. This flexibility has helped to make it one of the world's most planted grape varieties. As of 2004, Merlot was estimated to be the third most grown variety at globally.
The area dedicated to Merlot has continued to increase, with in 2015.
While Merlot is made across the globe, there tend to be two main styles. The "International style" favored by many New World wine regions tends to emphasize late harvesting to gain physiological ripeness and produce inky, purple-colored wines that are full in body with high alcohol and lush, velvety tannins with hints of plum and blackberry. While this international style is practiced by many Bordeaux wine producers, the traditional "Bordeaux-style" of Merlot involves harvesting Merlot earlier. This maintains the acidity and produces more medium-bodied wines with moderate alcohol levels that have fresh, red fruit flavors and potentially leafy, vegetal notes.
History and name
The earliest recorded mention of Merlot was in the notes of a local Bordeaux official who in 1784 labeled wine made from the grape in the Libournais region as one of the area's best. In 1824, the word Merlot itself appeared in an article on Médoc wine which mentioned that the grape was named after the local black bird who liked eating the ripe grapes on the vine. Other descriptions of the grape from the 19th century called the variety lou seme doù flube with the grape thought to have originated on one of the islands found along the Garonne river.By the 19th century it was being regularly planted in the Médoc on the "Left Bank" of the Gironde. After a series of setbacks that included a severe frost in 1956 and several vintages in the 1960s lost to rot, French authorities in Bordeaux banned new plantings of Merlot vines between 1970 and 1975.
It was first recorded in Italy around Venice under the synonym Bordò in 1855. The grape was introduced to the Swiss, from Bordeaux, sometime in the 19th century and was recorded in the Swiss canton of Ticino between 1905 and 1910. In the 1990s, Merlot saw an upswing of popularity in the United States. Red wine consumption, in general, increased in the US following the airing of the 60 Minutes report on the French Paradox and the potential health benefits of wine and, possibly, the chemical resveratrol. The popularity of Merlot stemmed in part from the relative ease in pronouncing the name of the wine as well as its softer, fruity profile that made it more approachable to some wine drinkers.
Parentage and relationship to other grapes
In the late 1990s, researchers at the University of California, Davis, showed that Merlot is an offspring of Cabernet Franc and is a half-sibling of Carménère, Malbec, and Cabernet Sauvignon. The identity of the second parent of Merlot wouldn't be discovered till the late 2000s when an obscure and unnamed variety, first sampled in 1996 from vines growing in an abandoned vineyard in Saint-Suliac in Brittany, was shown by DNA analysis to be the mother of Merlot.This grape, later discovered in front of houses as a decorative vine in the villages of Figers, Mainxe, Saint-Savinien, and Tanzac in the Poitou-Charentes, was colloquially known as Madeleina or Raisin de La Madeleine due to its propensity to be fully ripe and ready for harvest around the July 22nd feast day of Mary Magdalene. As the connection to Merlot became known, the grape was formally registered under the name Magdeleine Noire des Charentes. Through its relationship with Magdeleine Noire des Charentes, Merlot is related to the Southwest France wine grape Abouriou, though the exact nature of that relationship is not yet known.
Grape breeders have used Merlot crossed with other grapes to create several new varieties including Carmine, Ederena, Evmolpia, Fertilia, Mamaia, Nigra, Prodest, and Rebo.
Over the years, Merlot has spawned a color mutation that is used commercially, a pink-skinned variety known as Merlot gris. However, unlike the relationship between Grenache noir and Grenache blanc or Pinot noir and Pinot blanc, the variety known as Merlot blanc is not a color mutation but rather an offspring variety of Merlot crossing with Folle blanche.
Viticulture
Merlot grapes are identified by their loose bunches of large berries. The color has less of a blue/black hue than Cabernet Sauvignon grapes and with a thinner skin and fewer tannins per unit volume. It normally ripens up to two weeks earlier than Cabernet Sauvignon. Also compared to Cabernet, Merlot grapes tend to have a higher sugar content and lower malic acid. Ampelographer J.M. Boursiquot has noted that Merlot has seemed to inherit some of the best characteristics from its parent varieties—its fertility and easy ripening ability from Magdeleine Noire des Charentes and its color, tannin and flavor phenolic potential from Cabernet Franc.Merlot thrives in cold soil, particularly ferrous clay. The vine tends to bud early which gives it some risk to cold frost and its thinner skin increases its susceptibility to the viticultural hazard of Botrytis bunch rot. If bad weather occurs during flowering, the Merlot vine is prone to develop coulure. The vine can also be susceptible to downy mildew and to infection by leafhopper insect varieties.
Water stress is important to the vine with it thriving in well-drained soil more so than at base of a slope. Pruning is a major component to the quality of the wine that is produced with some producers believing it is best to prune the vine "short". Wine consultant Michel Rolland is a major proponent of reducing the yields of Merlot grapes to improve quality. The age of the vine is also important, with older vines contributing character to the resulting wine.
File:Merlot.JPG|thumb|Merlot grape cluster ripening in Istria County, Croatia
A characteristic of the Merlot grape is the propensity to quickly overripen once it hits its initial ripeness level, sometimes in a matter of a few days. There are two schools of thought on the right time to harvest Merlot. The wine makers of Château Pétrus favor early picking to best maintain the wine's acidity and finesse as well as its potential for aging. Others, such as Rolland, favor late picking and the added fruit body that comes with a little bit of over-ripeness.
Wine regions
Merlot is one of the world's most widely planted grape variety with plantings of the vine outpacing even the more well-known Cabernet Sauvignon in many regions, including the grape's homeland of France. Here, France is home to nearly two thirds of the world's total plantings of Merlot. Beyond France it is also grown in Italy, Algeria, California, Romania, Australia, Argentina, Bulgaria, Canada, Chile, Greece, New Zealand, South Africa, Switzerland, Croatia, Hungary, Montenegro, Slovenia, Mexico, and other parts of the United States such as Washington, Virginia, and Long Island. It grows in many regions that also grow Cabernet Sauvignon but tends to be cultivated in the cooler portions of those areas. In areas that are too warm, Merlot will ripen too early.In places like Israel, Merlot is the second most widely planted grape variety after Cabernet Sauvignon with in cultivation, making very "New World-style" wines. The grape can also be found in Turkey, Malta, and Cyprus.
France
Merlot is the most commonly grown grape variety in France. In 2004, total French plantations stood at. By 2017, that number had dropped slightly to. It is most prominent in Southwest France in regions like Bordeaux, Bergerac, and Cahors, where it is often blended with Malbec. The largest recent increase in Merlot plantations has occurred in the south of France, such as Languedoc-Roussillon, where it is often made under the designation of Vin de Pays wine. Here, Merlot accounted for, more than doubling the devoted to Cabernet Sauvignon in the Languedoc.In the traditional Bordeaux blend, Merlot's role is to add body and softness. Despite accounting for 50-60% of overall plantings in Bordeaux, the grape tends to account for an average of 25% of the blends—especially in the Bordeaux wine regions of Graves and Médoc. Of these Left Bank regions, the commune of St-Estephe uses the highest percentage of Merlot in the blends. However, Merlot is much more prominent on the Right Bank of the Gironde in the regions of Pomerol and Saint-Émilion, where it will commonly comprise the majority of the blend. One of the most famous and rare wines in the world, Château Pétrus, is almost all Merlot. In Pomerol, where Merlot usually accounts for around 80% of the blend, the iron-clay soils of the region give Merlot more of a tannic backbone than what is found in other Bordeaux regions. It was in Pomerol that the garagistes movement began with small-scale production of highly sought after Merlot-based wines. In the sandy, clay-limestone-based soils of Saint-Émilion, Merlot accounts for around 60% of the blend and is usually blended with Cabernet Franc. In limestone, Merlot tends to develop more perfume notes while in sandy soils the wines are generally softer than Merlot grown in clay dominant soils. Merlot can also be found in significant quantities in Provence, Loire Valley, Savoie, Ardèche, Charente, Corrèze, Drôme, Isère and Vienne.