Other ingredients can be used to mix mustard, for example, sugar, honey, vinegar, wine, or milk. It is also possible to buy prepared mustard in many places.
Whole seeds can be soaked in liquid before grinding to create whole grain mustard.
Mustard oil can be extracted from mustard seeds. It is formed from mustard oil glucosides (glucosinolates) immediately after crushing. Different kinds of mustard give different mustard oils: black mustard gives a highly pungent mustard oil due to its content of sinigrin, while white mustard gives a much less pungent mustard oil due to its content of sinalbin.