Bún ốc
Bún ốc is a Vietnamese dish originating from Hanoi, Vietnam. Roasted or boiled snails (ốc luộc), may be eaten first as an appetizer. Snail congee is called cháo ốc, and canh ốc chuối đậu, is a thin snail soup with green banana, fried tofu and tía tô. Though it isn't known when this dish was first created, it is certainly one of the most typical dishes of Vietnamese cuisine. It's speculated to have come from a certain countryside, then followed the footsteps of immigrants to Thang Long citadel and became a specialty there. A related dish called luosifen (snail noodles) is popular across the border in Guangxi, China. The Hanoian often choose snails which are smaller and chewier than their land-based cousins. Fat and fresh snails are preferable, with rice noodles that were not soaked in water for too long. Cooks choose the best bun (rice noodle), which means thin and clear noodles. Bun oc not only contains broth, snails, and tofu as its basic characteristics but it can also contain green bananas, some fresh vegetables or chopped water spinach, bean sprouts, water dropwort, tomatoes, and other ingredients.
Source: Wikipedia