The size of glass used for serving wine can influence the amount of wine drunk, say researchers, adding that when restaurants served wine in 370ml rather than 300ml glasses they sold more wine, and tended to sell less when they used 250ml glasses.

 

The preliminary study, published in the journal Addiction, suggested that serving wine in larger wine glasses while keeping the same measure led to a significant increase in the amount of wine sold. The team used 300ml glasses as the reference level against which to compare the differences in consumption. In restaurants, when glass size was increased to 370ml, wine sales increased by 7.3 per cent, the study said.

 

Reducing the glass size to 250ml led to a drop of 9.6 per cent, although confidence intervals (the range of values within which the researchers can be fairly certain their true value lies) make this figure uncertain.Curiously, increasing the glass size further to 450ml made no difference compared to using 300ml glasses, the researchers said.

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