Courbu is the name of three different, but related varieties of wine

Wine

Wine is an alcoholic beverage, made of fermented fruit juice, usually from grapes. The natural chemical balance of grapes lets them ferment without the addition of sugars, acids, enzymes, or other nutrients. Grape wine is produced by fermenting crushed grapes using various types of yeast. Yeast...

 grape

Grape

A grape is a non-climacteric fruit, specifically a berry, that grows on the perennial and deciduous woody vines of the genus Vitis. Grapes can be eaten raw or they can be used for making jam, juice, jelly, vinegar, wine, grape seed extracts, raisins, molasses and grape seed oil. Grapes are also...

s primarily found in South West France

South West France (wine region)

South West France or in French Sud-Ouest, is a wine region in France covering several wine-producing areas situated respectively inland from, and south of, the wine region of Bordeaux...

. All are Vitis vinifera

Vitis vinifera

Vitis vinifera is a species of Vitis, native to the Mediterranean region, central Europe, and southwestern Asia, from Morocco and Portugal north to southern Germany and east to northern Iran....

grapes. The name Courbu, without suffix, can refer to both Petit Courbu and Courbu Blanc, and not all sources differ between the two.

Petit Courbu

Petit Courbu is a white wine grape from Gascony

Gascony

Gascony is an area of southwest France that was part of the "Province of Guyenne and Gascony" prior to the French Revolution. The region is vaguely defined and the distinction between Guyenne and Gascony is unclear; sometimes they are considered to overlap, and sometimes Gascony is considered a...

 with a long history in the region. It adds body and contributes aromas of citrus and honey to the wines. It is found in Pacherenc du Vic-Bilh AOC and other appellations of the region.

It is known under the synonyms Courbu and Courbu Petit.

Courbu Blanc

Courbu Blanc is found primarily in the Basque areas

Northern Basque Country

The French Basque Country or Northern Basque Country situated within the western part of the French department of the Pyrénées-Atlantiques constitutes the north-eastern part of the Basque Country....

, such as Irouléguy AOC

Irouléguy AOC

Irouléguy AOC wines come from Lower Navarre in the Northern Basque Country, France and are usually considered as part of the wine region of South West France . They are named after the village of Irouléguy and are the only wines with AOC certification in the Northern Basque Country...

. It is similar to Petit Courbu, but has darker young leaves.

It is known under the synonyms Bordeleza Zuria, Chacoli

Txakoli

Txakoli is a slightly sparkling, very dry white wine with high acidity and low alcohol content produced in the Spanish provinces of the Basque Country, Cantabria and northern Burgos. Further afield, Chile is also a producer of chacolí....

 Zuria, Cougnet, Courbeau, Courbi Blanc, Courbies, Courbis, Courbu, Courbu Gros, Courbut, Courbut Blanc, Courtoisie, Ondaria Zuria and Vieux Pacherenc.

Courbu Noir

Courbu Noir is a speciality of Béarn

Béarn

Béarn is one of the traditional provinces of France, located in the Pyrenees mountains and in the plain at their feet, in southwest France. Along with the three Basque provinces of Soule, Lower Navarre, and Labourd, the principality of Bidache, as well as small parts of Gascony, it forms in the...

, but is now almost extinct.

It is known under the synonyms Courbu Rouge and Dolceolo.

Other grapes

Courbu Rouge, which can refer to Courbu Noir, is also a synonym of Manseng Noir.