The red grape variety, also (MB x OP) x SV 6/10, is a new variety between (Muscat Bouschet x Oporto = Blauer Portugieser) x Svätovavrinecké(St. Laurent). The name is derived from the Slovakian name for the Danube. The crossing of the mother variety already took place 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 downy mildew, but susceptible to powdery mildew. It produces dark-coloured, mild red wines with aromas of cherries and chocolate. In Slovakia, it is grown on 62 hectares of vineyards (but there was no Kym Anderson entry in 2016).