How is this element of the wine service called?
wine tasting
wine coupage
distillation of wine
decanting of wine
 Fundamentally, decanting serves two purposes: to separate a wine from any sediment that may have formed and to aerate a wine in the hope that its aromas and flavors will be more vibrant upon serving.  
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wine tasting
wine coupage
distillation of wine
decanting of wine
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