Mustard is an annual herb cultivated as an oil seed crop. The major products are mustard powder used in the manufacture of mayonnaise, dried or dehydrated mustard leaves, whole mustard seeds etc. Whole mustard is used as a flavoring agent in Indian cooking. Mustard flour has preservative and antioxidant properties in addition to providing flavor and color. Mustard is used as a food flavoring, for forage, as an emetic, and diuretic, as well as a topical treatment for inflammatory conditions such as arthritis and rheumatism. Mustard also has potential pharmacological effects in cardiovascular disease, cancer, and diabetes; however, there are limited clinical trials to support its use for any indication.