mom's sour and hot soup

cut chicken or pork meat into small trips (shar)
add a bit of starch (2-3 tbsp)

starting with a chicken broth, add these to the boil:

cubed 1/3 pack of tofu
chopped wood ears
minced ginger and scallion
julienned carrot for color

then, add:

1 tbsp soy sauce
2.5 tbsp vinegar
1 tbsp sugar

to taste

mushrooms (enoki)
bean sprouts

then, add:

meat
egg

stir

you're ready! add pepper and scallion to taste.