Sweet, savory, fatty pork belly topped with crunchy vegetables, encompassed in a pillowy steamed bao bun. Gua bao, also known as pork belly buns is a popular Asian street food originated from China but enjoyed all throughout Asia. Gua baos are known for its white lotus leaf style bun that is steamed and has a wonderfully fluffy texture. This recipe for pork belly baos is a variation of the traditional gua bao.