non-vintage, often abbreviated to NV, a blended wine, particularly champagne or sparkling wine, which may contain the produce of several different vintages, although in champagne-making practice it is usually substantially based on the most recent vintage, to which some additional ingredients from older years, often called ‘reserve wines’, may be added.
Some mass-market wines are sold without a vintage year and are in practice a blend made throughout the year so that the first blend of the winter season, typically, may contain a mixture of wine from both the new and last year’s vintages.
