This is a very popular street snack in Hong Kong, mainly because of its name, and of course, the taste. No- you are not trying out the shark's fin, but just as the name suggests, it's the imitation! So, it's ethical (without any doubt) and cheap and most importantly, so delicious. The broth generally has glass noodles, shredded chicken (sometimes even fish or duck), and vinegar is also added for an extra punch.