Micro-organisms that produce the enzymes which convert sugar into alcohol. In fermentation of grapes, yeast produces primarily ethanol and small quantities of higher alcohols and esters that give a wine its individual character
Yeast
Glossary by Letter
The Wine Grapes of Switzerland
Gouais Blanc
A promiscuous grape. Not good for much, but with a long, long line of descendents, including the noble Chardonnay and Pinot Noir. Possibly from Croatia, it’s called Heunisch Weiss in Central Europe.
The name Gouais is comes from ‘gou’, which is a scornful word from old French referring to its standing as the grape of the peasants. Very prevalent in the Ile-de-France and in the Champagne during the Middle Ages and perhaps brought into Valais by the descendants of the Ligurians.
Acidic and with little residual sugar, it’s primarily used to blend with low acidic wine to give it a bit of liveliness. Ampelographic studies in the old vineyards of Oberwallis have found a red Gwäss with the same characteristics as the white Gwäss. Almost abandoned, it survives in Haut-Valais hiding under the alias of Gwäss, thanks to Mr. Josef-Marie Chanton, http://www.chanton.ch/home.html
Auxerrois blanc
A clone of the prolific Pinot Noir, Auxerrois blanc is a close cousin of Pinot blanc. It comes from the county of Auxerrois, and is best known from Alsace.
Kerner
Named after local poet and physician, Justinus Kerner, the Kerner grape was hybridized in 1929 in Lauffen in the Württemberg region. A hybrid of the white Riesling and the red Trollinger (Schiava grossa), it resembles the Riesling in character. It is being vinified in limited quantities in Valais, but its future in Valais dosen’t look too bright. It continues to do well in Germany, and on a smaller basis in Austria and Italy.
A remedy for the moroseness of old age.
Plato
