Buffalo hide soup is a traditional dish deeply rooted in the culinary culture of the Thai ethnic group in Dien Bien, often appearing in family meals and during festivals and holidays. The main ingredient is the bon plant, combined with dried or fresh buffalo hide that has been roasted, scraped clean, and then simmered until tender. The cooking process requires patience to achieve the perfect crispness and chewiness of the buffalo hide, blending with the rich, savory flavor of the bon plant and the aroma of mountain spices such as mắc khén (a type of wild pepper), chili, and garlic. This dish is highly nutritious and embodies the flavors of the Northwest mountains.