Dijon mustard originated in 1856, when Jean Naigeon of Dijon substituted verjuice, the acidic "green" juice of unripe grapes, for vinegar in the traditional mustard recipe.[29] Most mustards from Dijon today contain white wine rather than verjuice.
"Dijon mustard" is not a protected food name. While mustard factories still operate in Dijon and adjoining towns, most mustard described as "Dijon" is manufactured elsewhere. Even that produced in France is made almost exclusively from Canadian mustard seed.[citation needed]