OK... thought I'd put in my two cents and share as well.
First, a bit about my background:
- Chinese doctor from Southern China, Cantonese speaking, working with Dit Da for over 30 years, and a southern style kung fu practitioner
- My dit da training over the years come from several locally well-known Dit Da doctors - some purists and one from the Southern Dragon kung fu family, in addition to knowledge passed on from my own family
Regarding using water:
- I use rice wine for my jow, but I also know other Dit Da doctors (though very few) use water, and I have seen their jow work as well. There are also others who use either vodka or even vinegar. I prefer to use good quality rice wine because of its strong property of invigorating and moving blood, hence its ability to work on blood stasis.
- From my own perspective, I feel that because of its blood-related properties, dit da jow made with rice wine would be much more effective than that made from water which from a Chinese Medicine perspective, does not have the same blood-related properties.
Regarding grinding into powder:
- I usually just soak mine whole, but mainly because some of the herbs are not easily ground into powder especially if you don't have the right equipment, which I don't
- I have, at the same time, also made jow using herbs that have been ground, and it seems to work just as well
- I am not aware of any strong basis on why these herbs should not be ground into powder, and would love to find out more about why this is a detriment
And thanks to you all for sharing your information.