Dijon mustard is a refined version of that first condiment and has its origins, obviously enough, in Dijon, France. A man named Jean Naigeon created his version of mustard in Dijon in 1856. Throughout the ages, most people made mustard from mustard seeds and vinegar. Naigeon used “verjuice” instead of vinegar. Verjuice is a sour liquid made from unripe grapes.