Cha Ca is a famous Vietnamese dish that originated in Hanoi but can also be found in Halong. This dish features marinated fish, typically catfish or snakehead fish, that is cooked with turmeric and dill. The fish is pan-fried until crispy and served with vermicelli noodles, fresh herbs, peanuts, and a tangy dipping sauce. The combination of flavors in Cha Ca is unique and delicious, making it a popular choice among seafood lovers in Halong.