Mustard and cucumber yogurt raita is a refreshing and tangy Indian side dish made with yogurt, mustard seeds, and cucumber. It is a perfect accompaniment to spicy curries and biryanis. The creamy yogurt combined with the crunch of cucumber and the subtle heat of mustard seeds creates a delicious and cooling contrast of flavors. This raita is easy to make and can be served chilled as a refreshing side dish or as a dip with pita bread or naan.