Maida Vadai, also known as Medhu Vadai, is a popular South Indian snack made with all-purpose flour (maida) and spices. These crispy and fluffy vadais are perfect as an evening snack or as an accompaniment to a meal. The vadais are made by mixing the maida with spices, onions, and herbs, and then deep-frying them until golden brown. Serve them hot with coconut chutney or sambar for a delicious treat.