Nem hot dog is a popular street food in Hanoi that puts a Vietnamese twist on the classic hot dog. Instead of a traditional bun, the hot dog is wrapped in a crispy nem (spring roll) wrapper, giving it a delightful crunch. The nem hot dog is typically filled with a grilled or fried hot dog, along with a variety of toppings such as pickled vegetables, herbs, and sauces. The combination of the crispy nem wrapper, juicy hot dog, and flavorful toppings creates a unique and delicious eating experience. You can find nem hot dogs at street food stalls and markets in Hanoi, where they are enjoyed by locals and visitors alike.