In 1846 Etienne Cochet moved to Ambonnay, area renowned for Pinot Noir.
Since 1875 his son, Pol Cochet begins to develop its own vineyard.
This is the beginning of a long family tradition of carefully selected grapes from older vineyards of the Champagne region.
In the aftermath of World War I, Henry Petitjean, son of Pol Cochet continues to develop the winery.
Pierre Petitjean, his son, wine tasting enthusiast, takes part in the family business.
Despite economic fluctuations and climatic hazards of the years 1970-1980, Pierre Petitjean was able to provide the wine quality by increasing the number of bottles produced.