Just a little of this powder adds a hot and spicy, pungent flavour to food. Horseradish Powder is made from fresh horseradish that's finely grated and dried. Just add water to make a paste to serve with a traditional roast beef dinner. Stir it into ketchup for a quick and easy cocktail sauce for shrimp or add it to a Bloody Mary or Caesar cocktail. Add it along with chives to sour cream and mayonnaise as a dressing for potato salad or a dip for chips or stir it into a finished cheese sauce for a kick.