Gouais blanc (French pronunciation: ​[ɡu.ɛ blɑ̃]) or Weißer Heunisch (German pronunciation: [ˈvaɪsɐ ˈhɔʏnɪʃ]) is a white grape variety that is seldom grown today but is important as the ancestor of many traditional French and German grape varieties. The name Gouais derives from the old French adjective ‘gou’, a term of derision befitting its traditional status as the grape of the peasants. Likewise, the German name Weißer Heunisch labels it as one the lesser, Hunnic grapes.