This dish is called Nem Ran by northerners and Cha Gio by southerners. In Hanoi, the introduction of Nem Ran dates back to a time when Cha Ca had not existed. Although it ranks among Vietnam's specialty dishes, Nem Ran is very easy to prepare. Consequently, it has long been a preferred food on special occasions such as Tet and other family festivities.
Ingredients used for Nem Ran comprise of lean minced pork, sea crabs or unshelled shrimps, two kinds of edible mushroom (Nam Huong and Moc Nhi), dried onion, duck eggs, pepper, salt and different kinds of seasoning. All are mixed thoroughly before being wrapped with transparent rice paper into small rolls. These rolls are then fried in boiling oil.