Demijohn - Dame Jeanne - Bonbonne

A demijohn, also known as a Dame Jeanne or bonbonne, is a large, bulbous glass container with a narrow neck, traditionally used to store and transport liquids like wine, vinegar, or cognac. The term “Dame Jeanne,” French for “Lady Jane,” is said to trace back to a legend involving Queen Jeanne of Naples, who inspired its creation in the 14th century, while “demijohn” is its anglicized form, and “bonbonne” a colloquial French variant from “bonne” (good). Often encased in wicker for protection, these vessels—holding 20 to 50 liters—are vital in cognac production, where aged eaux-de-vie are transferred to halt maturation, preserving their flavor in a process dubbed “mummification.” Today, beyond their practical roots, demijohns double as chic decorative pieces, blending history with modern aesthetics.