Fish maw is the dried bladder of large fish.
It is used in highly prized traditional Cantonese meals, such as a soup ingredient.
It is believed to contain high nutritional value and is good for women because of a good source of collagen, which can improve skin texture and preserve good complexion. It is also rich in phosphorus and calcium. In traditional Chinese medicine, fish maw soup is believed to nourish yin – which is responsible for moistening and cooling bodily functions – to help achieve a balance between yin and yang.