What is the main ingredient in Dijon mustard?

Dijon mustard primarily derives its distinctive flavor and character from mustard seeds. These seeds are ground and combined with various other ingredients, typically including vinegar and water, to create the smooth and tangy condiment familiar to many. The use of mustard seeds allows Dijon mustard to maintain its signature heat and depth, which differentiates it from other types of mustard.

While vinegar is an important ingredient in Dijon mustard, it functions as an acid that balances the flavors and contributes to the overall texture rather than serving as the primary ingredient. Garlic and turmeric are also components often seen in different mustard varieties or may be added for flavor, but they are not essential to the traditional recipe for Dijon mustard. Thus, mustard seeds are the foundation that defines this mustard's unique taste and a key element of its production.