This is a traditional thai clear soup which has all the flavours-hot, sweet and tangy. It is simply delicious, spicy and mouth watering. The prawns and mushrooms brings out the true flavour. Prawns can also be substituted with boiled and shredded chicken. For a more filling version, try with noodles. It is a complete meal and a bowl of this appetizing soup gives complete satisfaction. It is almost like an indian rasam. This is a thai street food which is found all over the country. It has become very popular here now and can be found in many restaurants and eating joints. But a homemade tom yum soup is simply just out of this world.