Pickled mustard seeds are a tangy and flavorful condiment that adds a burst of flavor to any dish. The mustard seeds are soaked in a mixture of vinegar, sugar, and spices, which gives them a sweet and tangy taste. They can be used as a topping for sandwiches, salads, or roasted vegetables, or as a garnish for meats and seafood. The pickled mustard seeds can be stored in the refrigerator for several weeks, making them a convenient and versatile condiment to have on hand.