Glossary terms
Yeast
Yeast occurs naturally on grape skins, but many winemakers today use specially selected cultured yeasts to allow better control of the fermentation.
Yield
Received wisdom is that low yield equals high quality, though in practice there are many factors at work, including density of plantation, local climate, etc. Yields are normally expressed in weight per unit area (tons per acre) or volume per unit area (hectolitres per hectare).

Decanter World Wine Awards

