Mustard is a plant native to Europe and Asia. Mustard is odourless, with a slightly sharp taste. The seeds of this spice are used to season cold meats, beef and pork, fish dishes, herbal butters, various kinds of marinades, sour pickles or sauerkraut. It is a basic ingredient of mustard. It is also perfect for salads, sauces, mayonnaise and vegetables with vinegar.