The white grape variety comes from Hungary, The name means "blue stem" and refers to the slightly bluish stem color. Synonyms are bluetongue, bluestone, bluestalk and piros kéknyelü. Despite apparently indicative synonyms or morphological It must not be similar to the Hungarian varieties Balafánt and Furmint or the Italian Picolit (which was long considered identical). It is a pure female grape, Therefore, for the purpose of fertilization, the variety is often in the neighborhood Budai Zold grown. The late ripening, unprofitable vine is susceptible to Verrieseln, resistant to frost and moderately against Botrytis but prone to wrong people mildew, It produces acidic, aromatic, alcoholic and full-bodied white wines with storage potential. The variety was previously widespread, but was increasingly replaced by high-yielding varieties in the 1970s. It will be in the area Badacsony at the Balaton (Lake Balaton) cultivated. In 2010, 43 hectares of vineyards were shown (Kym Anderson ).