This photograph shows a marker reading Bollinger in the vineyards at the Bollinger Champagne House's vineyard in Avenay-Val-d'Or, northeastern France, on August 18, 2026. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)

This photograph shows the Champagne vineyards in Avenay-Val-d'Or, northeastern France, on August 18, 2026. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)

Grape harvesters collect grapes of Pinot Noir in the vineyards at the Bollinger Champagne House's vineyard in Avenay-Val-d'Or, northeastern France, on August 18, 2026. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)

A worker transfers harvested grapes of Pinot Noir into a crate in the vineyards at the Bollinger Champagne House's vineyard in Avenay-Val-d'Or, northeastern France, on August 18, 2026. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)

This photograph shows a "Route touristique du Champagne" sign in Tours-sur-Marne, northeastern France, on August 18, 2026. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)

A grape harvester collects grapes of Pinot Noir in the vineyards at the Bollinger Champagne House's vineyard in Avenay-Val-d'Or, northeastern France, on August 18, 2026. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)

This aerial photograph shows grape pickers harvesting grapes of Pinot Noir in the vineyards at the Bollinger Champagne House's vineyard in Avenay-Val-d'Or, northeastern France, on August 18, 2026. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)

A worker carries a crate in the vineyards at the Bollinger Champagne House's vineyard in Avenay-Val-d'Or, northeastern France, on August 18, 2026. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)