Yellow Mustard SeedsGround mustard is 100% pure and free from any other additives. It is a convenient way to add that peppery flavour to any dish.UsesSprinkle mustard powder into your mashed potato, or even mayonnaise (along with curry powder to make quick coronation chicken). It can be added to other herbs and spices to make seasoning's for roasted/grilled meats and vegetables. And of course, you can use mustard powder to create spreadable English Mustard.