Just heard back from the owner, seems like a nice guy
"Our Kava is Waka Yaqona from the Kadavu islands in Fiji.. Its a smooth easy drinking Kava with mellow euphoric effects and a ALL NUMB effect. Drink it thick for the instant effect or more diluted to drink for a longer period with you friends.Good for playing music or getting creative with art. Or before bed to sleep deep. But the really good stuff is our fresh KAUAI grown HAWAIIAN AWA. I sell fresh frozen kava bricks when available. ITS DA BESS!"
I just heard back from them too regarding their instant. Here's what they said.
"ALOHA -- Our instant kava is 100% organic raw kava powder that it finely sifted like flour. Its very potent and effective."
I guess that means it's micronised powder rather than extract?