Tressot or Tressot Noir is a variety of dark-skinned wine 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...

. Tressot has historically been grown in Burgundy

Burgundy wine

Burgundy wine is wine made in the Burgundy region in eastern France, in the valleys and slopes west of the Saône River, a tributary of the Rhône. The most famous wines produced here - those commonly referred to as "Burgundies" - are red wines made from Pinot Noir grapes or white wines made from...

 but it is now almost extinct. Some small plantations still remain in the Chablis

Chablis

Chablis is a town and commune in the Yonne department in Burgundy in north-central France.It lies in the valley of the River Serein.-Wine:The village of Chablis gives its name to one of the most famous French white wines...

 district of Burgundy.

The grape has been identified as a cross between Duras

Duras (grape)

Duras is a traditional French variety of red wine grape that is mostly grown around the Tarn River, northeast of Toulouse. It is usually blended with other traditional varieties, but production has been declining in recent years....

 and Petit Verdot

Petit verdot

Petit Verdot is a variety of red wine grape, principally used in classic Bordeaux blends. It ripens much later than the other varieties in Bordeaux, often too late, so it fell out of favour in its home region. When it does ripen, it is added in small amounts to add tannin, colour and flavour to the...

. Duras is a traditional French grape variety currently found only in the Tarn valley

Tarn River

The Tarn is a long river in southern France , right tributary of the Garonne.The Tarn runs in a roughly westerly direction, from its source at an altitude of 1,550 m on Mont Lozère in the Cévennes mountains , through the deep gorges and canyons of the Gorges du Tarn The Tarn is a long...

 northeast of Toulouse. Petit Verdot is one of the classic grapes of Bordeaux

Bordeaux wine

A Bordeaux wine is any wine produced in the Bordeaux region of France. Average vintages produce over 700 million bottles of Bordeaux wine, ranging from large quantities of everyday table wine, to some of the most expensive and prestigious wines in the world...

, although it probably originated further south, so the current distribution of the parents suggests the Bastardo was born somewhere in South Western France, if not on the banks of the Tarn itself.

In the literature it is often confused with the grape variety Trousseau.

Synonyms

Tressot is also known under the following synoyms: Ancien Tresseau, Bon Tressot, Bourguignon Noir, Bregin Panache, Foualliard, Fouallieux, Grand Noir, Grand Tressiot, Grand Verrot, Gros Tressot, Guila Noir, Morillon Noir, Nairen Noir, Nairien, Nairien Noir, Nere Noir, Neri Blau Nerien Nerre Neuchateler, Noirien, Pendoulat, Petit Nerre, Petit Verot, Petite Nerre, Plant de Thoisey, Treceau, Treceault, Tresseau, Tresseau Ordinaire, Tressiot, Tressiot Enrage,
Tressot Noir, Vereau, Vero, Verot, Verrot, Verrot de Coulanges