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 mother variety was already crossed in 1951, the crossing with Svätovavrinecké 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 ones mildew, It produces dark-colored, mild red wines with aromas of cherries and chocolate. The variety is in the Slovakia grown. In 2011, 62 hectares of vineyards were shown with increasing tendency (in 2010 there were 46).