Mi quang may also contain chicken or pig bones in its recipe in some regions. Depending on regional cooking preferences, other ingredients such as bean sprouts, fish sauce or garlic can be used to create unique flavor profiles in each variation of mi quang soup.u003cbru003eInstead of pork belly, you can also add or substitute for chicken thigh, sliced and chopped. I would not use chicken breast - there is no fat there and a good bowl of mi quang requires some chewy fat! Boneless chicken thighs would be the best substitute here.