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Grappa is an alcoholic beverage, a fragrant, grape-based pomace brandy of Italian origin that contains 35%–60% alcohol by volume (70 to 120 US proof). It is similar to Cypriot Zivania, Persian Aragh, Spanish orujo, French marc, Georgian chacha, German Tresterbrand, Portuguese bagaceira, Greek tsipouro, Hungarian Törkölypálinka, Bulgarian ракия (rakia), Serbo-Croatian (Bosnian, Croatian, Serbian, Montenegrin) Loza or Rakija/Ракија (in Istria: rakija and grappa), Romanian tescovină, and Macedonian ракија, Albanian Rakia/Rakija.
The flavour of grappa, like that of wine, depends on the type and quality of the grapes used, as well as the specifics of the distillation process. Grappa is made by distilling the skins, pulp, seeds, and stems (i.e., the pomace) left over from winemaking after pressing the grapes. It was originally made to prevent waste by using these leftovers. A similar drink, known as acquavite d'uva, is made by distilling whole must.
Criterion 2 rules out the direct fermentation of pure grape juice, which is the method used to produce brandy.
Criterion 3 has two important implications. First, the distillation must occur on solids. Thus, it is carried out not with a direct flame but with a bain-marie or steam distillation; otherwise, the pomace may burn. Second, the woody parts of the grapes (the stems and seeds) are co-fermented with the sugar-rich juice; this produces a very small amount of methanol, which is much more toxic than ethanol. Unlike in the similar process of making red wine, in grappa the methanol must be carefully removed during distillation. That is why there is an Italian law requiring winemakers to sell their pomace to grappa makers; this is a measure that was taken against moonshine operations, which are now very rare in Italy.
In Italy, grappa is primarily served as a digestivo or after-dinner drink. Its main purpose is to aid in the digestion of heavy meals. Grappa may also be added to espresso coffee to create a caffè corretto, meaning "corrected coffee". Another variation of this is the ammazzacaffè ("coffee-killer"): the espresso is drunk first, followed by a few ounces of grappa served in its own glass. In Veneto, there is resentin ("little rinser"): after finishing a cup of espresso with sugar, a few drops of grappa are poured into the nearly empty cup, swirled, and drunk down in one sip.
Among the best-known producers of grappa are Nonino, Bocchino, Berta, Sibona, Nardini, Jacopo Poli, Brotto, Villa de Varda, Domenis, Bepi Tosolini, and Distilleria De Negri. These grappas are produced in significant quantities and are exported; there are also many small local or regional grappas.
Most grappa is clear, indicating it is an unaged distillate, though some may retain very faint pigments from their original fruit pomace. Lately,[clarification needed] aged grappas have become more common, and these take on a yellow, or red-brown hue from the barrels in which they are stored.
Distillation is an ancient practice that can be traced back to the first century AD. while the distillation of alcohol may have been carried out reliably by the School of Salerno in the 12th century. Fractional distillation was developed by Tadeo Alderotti in the 13th century. There is a legend that tells of a Roman soldier who first distilled grappa in the northern Italian town of Bassano del Grappa using distilling equipment stolen in Egypt (“Crisiopea di Cleopatra” 2nd century AD). However, the story cannot be considered reliable as such equipment could not produce grappa. Distillation useful for producing beverages was not discovered until the eighth century, and it likely took about two more centuries for the technology to travel from its home in the Levant and Persia to Italy (likely by route of the Crusades).
Around 1300-1400 AD, however, the introduction of water as a coolant in the distilling equipment made it possible to produce a substantially larger amount of distilled wine and to distill pomace. Around 1600 AD, the Jesuits in Spain, Italy and Germany studied and codified the techniques used to produce brandy or grappa, and their methods were used until recent times. The Museum of Wine and Grappa shows historical equipment used in the early years of grappa distillation.
The modernization of grappa distillation is relatively recent, probably in 1979 in Northern Italy. Initially it was carried out by direct flame but soon the advantages of a bain-marie or steam distillation to obtain a better product became obvious. Modern refinements included the distillation of pomace under vacuum, the use of varietal grapes and aging in casks of various types of wood to improve the flavor of the liquor. Oak is the most used, but some high end grappas, are aged successively in cask of oak, acacia, ash and cherrywood, an innovation introduced by the Marzadro Distillery.
Professional tasters distinguish four categories of grappa: young, cask-conditioned, aromatic and aromatized grappas. Grappa tastings begin with young grappas, then continue with cask-conditioned and aromatic grappas and finish with aromatized grappas.
When the tasting involves more than one grappa from the same category, the examination begins with the grappa that has the lowest alcohol content and concludes with the product richest in alcohol. In the case of the two grappas with the same alcohol content, the tasting begins with the smoother and less markedly flavoured product, which the organizer of the tasting will have selected beforehand.
After each tasting, and before sampling another glass, some tasters recommend drinking half a glass of milk to refresh the taste receptors on the tongue. Another way to "taste" grappa is by rubbing a small amount on the back of the hand and sniffing. If the aroma is pleasant, the grappa is well made. Impurities in grappa come out in the vapour and can be easily distinguished in this way.
Various other food products can help stop taste-characteristics of one grappa "dragging" or carrying over to the next. Foods effective in this role, and that also provide an agreeable accompaniment to grappa's own flavour include:
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