The fern powder (also known as "Duba powder") is made by grinding the roots of wild fern (commonly known as "Duba root"). It is mixed with water to form a smooth paste, lightly baked in a pot to form thin pancakes, and then rolled into a cylindrical shape while hot. After steaming thoroughly in a bamboo steamer, it is cut into short sections and served with various seasonings. This process cleverly combines traditional flavors, transforming the rustic simplicity of the wilderness into elegance and tenderness on the tongue.