Louis Pasteur published a major study of wine fermentation in 1866 after investigating the science of fermentation, including wine.
Pasteur demonstrated that fermentation is carried out by living microorganisms, overturning older ideas that it was simply a chemical breakdown without biological agents. His work helped explain why wines could become spoiled and why heating liquids could reduce unwanted microbial activity.
Pasteur’s research was conducted in France and had broad importance for wine, beer, vinegar, food preservation, and public health. It did not invent Champagne’s traditional method, nor did Pasteur personally create the bubbles in sparkling wine.
The Champagne connection is often simplified in popular accounts. Traditional Champagne production depends on yeast fermentation in the bottle, but the method developed historically before Pasteur’s microbiological explanation. His contribution was scientific understanding and better control of fermentation, not the creation of the beverage.