Spicy mustard is a type of condiment made from ground mustard seeds, vinegar, and various spices. It is known for its sharp, tangy flavor and is often used to enhance the taste of sandwiches, hot dogs, and pretzels. The heat level can vary, with some versions being milder and others delivering a strong kick. This condiment is popular in many cuisines around the world, including American, German, and French dishes. It can also be used in salad dressings, marinades, and sauces, making it a versatile ingredient in cooking.