Mustard is available in several different forms, all originating from the mustard plant. Mustard is first harvested as whole mustard seeds, which can then be ground into powdered or dry mustard. Both the seeds and the ground mustard are used as seasonings to make prepared mustard, mustard sauces and flavorings for food dishes.

Mustards can be used to spread over meats as a marinade and seasoning, they can be used as an ingredient to flavor numerous foods, or they can be served as a dip for pretzels and other snack foods. Mustards keep well for long periods of time if stored in cool dry areas for some varieties and refrigerated areas for others.