Irsai Olivér

Pál Kocsis bred Irsai Olivér in 1930 at Kecskemét in central Hungary. The parents are Pozsonyi Fehér, a white variety no longer grown, and Csabagyöngye (Pearl of Csaba), an early-ripening table grape with Muscat scent. Csabagyöngye was itself created in 1904 by Adolf Stark and János Mathiász. Its parentage was disputed for a long time, and newer DNA analysis suggests a cross of Madeleine Angevine with Muscat Fleur d'Oranger, a result best regarded as probable rather than settled. The name is said to commemorate the young son of a wine merchant who was a friend of the breeder.

For several decades the variety served only as a table grape, and it was formally registered in 1975. Winemaking started in the 1980s, after growers noticed how dependably it ripened and how much aroma it held. It then became a parent itself: in 1960 Károly Bakonyi crossed it with Red Traminer to create Cserszegi fűszeres, and it also stands behind Agni.

Outside Hungary it reached Slovakia and the Czech Republic, where Welschriesling is a frequent partner in blends and the grape also goes into sparkling wine. It travelled further to Switzerland, Croatia, Germany and Russia, where labels usually read Muscat Oliver.

The vine is vigorous, buds early and ripens very early, with fruit ready from August in warm years. Hard pruning is needed to hold yields and vigour in check. Bunches are medium-sized with small, firm-skinned berries. Cold winters can damage it, so site choice matters at the cooler edge of its range, and mites and powdery mildew are both a threat in the vineyard. Resistance to botrytis bunch rot is a real advantage in humid autumns, although wasps and birds are drawn to the ripe, sugary fruit and can take a significant share of a crop. Because the berries ripen so early and acidity is naturally low, picking date has a large effect on freshness, and cooler sites in the north and west generally give the best balance.

Most Irsai Olivér is dry or off-dry, light in body and moderate in alcohol, with low to medium acidity and a vivid grapey, floral nose. Fermentation is usually reductive and temperature-controlled in stainless steel, and the wines are bottled within months of harvest for early drinking. The aroma can be overpowering on its own, so many producers blend it with a more structured variety to add acidity and length, or hold back on extraction and skin contact to keep the perfume in check. Semi-sweet versions exist for the domestic market, and the variety is also used for light sparkling wines, particularly in Slovakia and Moravia. It is a popular base for the spritzer known as fröccs. Few examples are meant to age; the wines are at their best within a year or two of the vintage.