Chinese hot mustard is usually found as a powder. This powder features a mercurial oil that produces a sharp bite and aroma it is often described as similar to horseradish where the sensation quickly overwhelms the sinuses. Sharing the same chemical characteristics of the more popular brown mustard whose oil content is not quite as high in the oriental mustard powder. Often used in Chinese cooking it is also found in the mustard at your local Chinese restaurant, English hot mustard, and in some Dijon and German mustards as well. You will also find it used to flavor vinegars and in pickling spices.