Nem Cua Be, or crab spring rolls, are a specialty in Halong. These crispy and flavorful spring rolls are filled with a mixture of crab meat, minced pork, mushrooms, and various spices. The rolls are then deep-fried until golden brown and served with a sweet and sour dipping sauce. The combination of the crispy exterior and the savory filling makes Nem Cua Be a popular appetizer or snack in Halong.