Organisms that issue enzymes that trigger the fermentation process; yeasts can be natural or commercial.

The name for Champagne made entirely from red grapes, either Pinot Noir or Pinot Meunier, or both.

A popular grape in California of disputed origin; scientists say it is related to grapes in Croatia and southern Italy.

The science and business of growing wine grapes.

The amount of grapes harvested in a particular year.

A particular year in the wine business; a specific harvest.

A fragrant, powerful white grape grown in the Rhone Valley of France and elsewhere.

A large wine-producing region in northern Italy.

Sweet wine from Tuscany made from late-harvest Trebbiano and Malvasia grapes.

A wine made from just one grape type and named after that grape; the opposite of a blend.