Banh Xeo is a Vietnamese-style pancake that is popular in Halong Bay. It is made from a batter of rice flour, coconut milk, and turmeric, which is then filled with a mixture of shrimp, pork, bean sprouts, and onions. The pancake is cooked until crispy and golden brown, and then folded in half. Banh Xeo is typically served with a side of fresh herbs and a dipping sauce. The combination of the crispy pancake, the flavorful filling, and the refreshing herbs creates a delightful and satisfying dish.