1. subtraction

gather 4kg fresh wild grapes and erase the trunk and the other material.

2. crushing

well crushing and

3. fermentation

put the berrys with black sugar in the pot and sealing up with window-paper and then bury underground at which has little changed temperature(15∼20℃)

4. make juice

after spending 15∼20days fermentation is over at this time strain juice through a sieve and put in the narrowed neck bottle and keep in the cool place(13∼15℃) and drink it as you need.   

▼ traditional civil remedy

bury the pot same as the above method and pull out after 100day and strain juice through a sieve and put in the narrowed neck bottle and keep in the cool place(13∼15℃) and drink it as you need.