Mustard seeds are also a good source of several vitamins, including vitamins C and K, thiamin, riboflavin, vitamin B6, and folic acid. They have a high percentage of dietary fiber and are a valuable source of several bioactive compounds such as antioxidants and polyunsaturated fatty acids. Yellow mustard seeds are extensively used in ready-to-eat foods that typically come in jars or squeeze bottles to be used in sandwiches or as dips. Brown mustard seeds are usually spicier than yellow mustard seeds. They are used in Asian dishes to add spice and flavor to cooked dishes. Yellow mustard is regularly used to top hot dogs, sandwiches, pretzels, and hamburgers. It is also an ingredient of many potato salads, barbecue sauces, and salad dressings.