A strain of Saccharomyces cerevisiae, has been derived from a selection of the Geisenheim Institute in Germany. It is a relatively slow fermenter, identical to Geisenheim Epernay, but producing less foam. This yeast requires nutrient addition for most chardonnay fermentations. Côte des Blancs produces fine, fruity aromas and may be controlled by lowering temperature to finish with some residual sugar. It is recommended for reds, whites, sparkling cuvées and non-grape fruit wines (especially apple, it is reported). Ferments best between 17°C-30°C (64°-86°F). Sensitive below 13°C (55°F).
*Cote des Blancs is suitable only for the base cuvee for sparkling wine, and should not be used for secondary fermentation.