The red grape variety, also (MB x OP) x SV 6/10, is a new breed between ( Muscat Bouschet x Oporto = Blue Portuguese ) x Svätovavrinecké ( St. Laurent ). The name derives from the Slovak name for the Danube from. The crossing of the mother variety took place already in 1951, the crossing with Svätovavrinecké then in 1958 in Bratislava (Slovakia) by the breeder Dorota Pospíšilová, The medium to late ripening vine is resistant to frost. Botrytis and False, but prone to Real mildew, It produces dark, mild red wines with aromas of cherries and chocolate. The variety is in the Slovakia grown. In 2011, 62 hectares of vineyards were reported with an upward trend (46 in 2010).