Tom Yum
Goong is a soup base serving with hot and sour taste. It is one of the famous dishes in Thailand. The below is a recipe from
http://www.thaitable.com/Main ingredients for 2 servings
4 cups water

1 cup shrimp
5 mushrooms
1-2 limes
1 lemon grass
3
kaffir lime leaves
2 tablespoon fish sauce
5 sprigs cilantro (Chinese parsley)
3 chili peppers
1 tablespoon
nam prig pow (core mixture of shallots, garlic, shrimp paste, dry chili pepper, salt, and sugar. Frequently there is also tamarind paste and dried shrimp.) Optional
Preparation instructions:
Start boiling the water in a 2 quart pot. Peel and
devein the shrimp and set them aside. Cut lemon grass into pieces, 5-6 inches long. Use the back of your knife to pound the lemon grass, just to bruise it to release the flavor. If you want, you can tie the lemon grass into a knot to make it easier to manage. Drop the lemon grass in water and let boil for 5 minutes. Put the fish sauce and 1 lime's juice into the bottom of the bowls you will serve the soup in. Crush chili pepper and add to the bowl. Remove the stems from the
kaffir lime leaves and add the leafy part to the pot. Clean and halve the mushrooms and add them to the pot. Add the shrimp and turn off the heat. Shrimp gets too tough very quickly, and will cook even when it is just sitting in the warm broth. Scoop the shrimp and liquid into the serving bowls immediately. As soon as you add the liquid to the serving bowl, you will see that the broth becomes cloudy because of the lime juice. Add the
nam prig pow. Sprinkle with cilantro and serve. Be very careful, the peppers can be hot. Take a small sip at a time. Add more fish sauce and/or lime juice if it tastes bland. It's right if it's good for your sinus.
Tips and substitutions:
Unfortunately, for the true taste, it is difficult to substitute anything for the
kaffir lime leaves. The richness of the sour taste comes from the complement of the different citrus flavored ingredients. I serve this soup
directly into individual bowls for each person. If you don't like it hot, cut down on the chili peppers or do not cut them up, but leave them whole for decoration.