Gamay

Gamay is a purple-colored grape variety used to make red wines, most notably grown in Beaujolais and in the Loire Valley around Tours.
Its full name is Gamay Noir à Jus Blanc.

 It is a very old cultivar, mentioned as long ago as the 15th century. It has been often cultivated because it makes for abundant production; however, it can produce wines of distinction when planted on acidic soils, which help to soften the grape's naturally high acidity.