No specific how much soup can be simmered, to be more concentrated, put less water.
Pork bone soup specific method is as follows:
1. pork bone back to wash, drain water;
2. and then clean with water, drained;
3. pot of boiling water, the ginger, blanched pork bone into the pot;
4. large fire boil after fishing off the remnants of the blood froth, has been a large fire to cook for about 10 minutes;
5. and then turn Small fire slowly simmer about 3 hours that is, it is best to use the oil sieve to the surface of the oil fishing off, so as not to be too greasy!