The name of the dish itself highlights its three essential ingredients: bún (rice vermicelli), đậu (fried tofu), and mắm tôm(fermented shrimp paste). Though simple and rustic, this dish embodies a distinct culinary tradition of old Hanoi. While rice vermicelli and fried tofu are common elements in Vietnamese daily meals, when paired with mắm tôm, they create a bold and refined flavor that truly showcases the essence of Vietnamese gastronomy.