It is usually left as such in English, "gamay noir".
"Gamay" is the name of the variety of grape, and the name of the
wine made from it.
"Noir" means "black", and indicates a dark red color.
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Beaujolais wine is generally made from the Gamay grape which is
a purple-colored grape that has a thin skin and is low in tannins.
The Gamay grape has often been cultivated due to its abundant
production.
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Gamay is pronounced guh-MAY.
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Two wines immediately come to mind, Beaujolais and pinot noir.
Beaujolais is a wine region in France whose reds come from the
gamay grape. These wines are usually very light and fruity. Pinot
noir is a grape found in many places, but the least "alcoholy" ones
are the fruit-bombs found in California's Central Coast region.