Yellow mustard seeds, derived from the mustard plant, are small, round seeds with a mild, slightly tangy flavor. They are rich in protein, fiber, vitamins (such as vitamin C), and minerals (like calcium and magnesium). Yellow mustard seeds are commonly used in condiments like mustard sauce and pickles, as well as in spice blends and marinades. They offer potential health benefits, including digestive aid, anti-inflammatory properties, and supporting overall heart health.