A man works in the wine-making cellar during the grape harvest at the Bollinger Champagne House's vineyard in Ay, northeastern France, on August 18, 2026. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)

A worker takes a sample of juice to measure the sugar content of the grapes in the wine press during the grape harvest at the Bollinger Champagne House's vineyard in Mareuil-sur-Ay, northeastern France, on August 18, 2026. Due to the rise of temperatures linked to human induced climate change and a scorching hot year for 2026, the grape harvest starts early this year. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)

This photograph shows a "Champagne Bollinger" logo at the Bollinger Champagne House's vineyard in Ay, northeastern France, on August 18, 2026. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)

Workers load crates of Pinot Noir grapes onto a trailer during the grape harvest in the vineyards at the Bollinger Champagne House's vineyard in Avenay-Val-d'Or, northeastern France, on August 18, 2026. Due to the rise of temperatures linked to human induced climate change and a scorching hot year for 2026, the grape harvest starts early this year. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)

A worker carries crates 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 photograph shows a "Route touristique du Champagne" road 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 next to a filled up bucket 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 "Grape harvest - health and safety at work" sign in Tours-sur-Marne, northeastern France, on August 18, 2026. (Photo by Jean-Christophe VERHAEGEN / AFP via Getty Images)