Nylon sev is a type of crispy noodles made from gram flour paste, seasoned with turmeric and various spices. It is characterized by its fine and thin texture, achieved through the use of very fine molds during preparation of the strands. Nylon sev is commonly used as a garnish in chaat preparations, adding a crunchy texture to the dish. It is appreciated for its versatility and ability to enhance the overall taste and texture of various Indian snacks.