Bánh bò (literally "cow cake" or "crawl cake") is a sweet, chewy sponge cake from Vietnam. It is made from rice flour, water, sugar, and yeast, and has a honeycomb-like appearance (called rễ tre, literally "bamboo roots," in Vietnamese) on the inside due to the presence of numerous small air bubbles. Coconut milk is also usually a part of the batter, imparting a slight flavor and aroma of coconut. The cake is of Southern Chinese origin, although the Chinese version, called bái táng gāo (白糖糕), does not contain coconut milk. Bánh bò are generally eaten as a dessert, although they may also be consumed as an accompaniment to a meal.