Champagne makers fear that they have again lost a significant amount of their potential grape harvest after plunging temperatures caused severe late-spring frosts in France’s premier sparkling wine region, as well as in other vineyard areas of the country.

Temperatures have dropped below zero overnight in most of France this week, causing nerves to fray in the vineyards. Champagne has been no exception, and frost damage seems to be omnipresent in the region.

The worst hit is probably the Côte des Bar in the Aube department, although a full damage report was still being compiled. Last year the region suffered similar losses after the severe frosts of 27 April.

This means that local growers….