Seeded mustard, also known as whole grain mustard, is a type of mustard condiment that contains whole mustard seeds. It is made by combining mustard seeds with vinegar, water, salt, and sometimes other spices or flavorings. The mustard seeds give the condiment a slightly coarse texture and a distinct flavor. Seeded mustard is commonly used in sandwiches, burgers, dressings, marinades, and sauces to add a tangy and slightly spicy kick. It can be used as a spread or mixed into various recipes to enhance the taste and provide texture.