“Some wine literature says that the yield (production per acre or hectare) is higher for white grapes than for red grapes. What's the reason for this difference?” —Morten S. (Coppet, Switzerland )

Hello Morten. My guess is that white grapes are often grown at high yields NOT because they have to be, but because they are intentionally being grown to make an inexpensive wine—pinot grigio in Italy for example or any number of simple whites in central Spain and Portugal. OR, it might also be that whites are grown at very high yields when they are meant to be simple neutral distilling material—ugni blanc in France, chenin blanc in South Africa, and palomino in Spain for example. The latter sometimes reaches 20 tons per acre (~300 hectoliters per hectare).

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