As most of you know other vendors that "Make" the instant kava, they will dehydrate the kava juice. In this process they will take the fresh kava root that has been washed and they will grind it or pound it to a pulp. This pulp is then mixed with water and they strain the fibers away so that there is only the good stuff from the kava, it is exactly how they drink fresh root in the Nakamals in Vanuatu, so imagine you have a few shells of fresh kava drink, if you dehydrate that drink you will have the powder that is being sold.
With mine, I do make a pulp and then I mix the pulp with water and wash the pulp 3 times, this gets out all the good stuff and leaves all the course fibers for me to throw away. I then will let the liquid sit for 12-24 hrs in a walk in fridge and after the 12=24 hrs I will go in and get the mix of kava and water, but now since it was sitting so long all the good stuff is settled to the bottom and since it is full of the stuff we want, the "Kavalactones" it is very sticky so all I do is turn the bowls upside down to remove the water, all that is left on the bottom of the bowls is a kavalactone rich goop. It is this goop that I take and I spread it on cookie sheets to dry it slowly in my kiln that uses low heat and a dehumidifier, the rest is a closely guarded secret.
But now you get the idea of how instant kava is made.
Aloha.
Chris