Yellow mustard seeds are small, round seeds that come from the mustard plant. They are commonly used in cooking, particularly in Indian, Middle Eastern, and European cuisines, and are a key ingredient in preparing mustard condiments.

In addition to their culinary uses, yellow mustard seeds have some potential health benefits. They are a good source of antioxidants and may have anti-inflammatory effects, as well as being rich in minerals like calcium, iron, and magnesium. However, as with all foods, it's important to consume mustard seeds in moderation and as part of a balanced diet.