Bula! I made two shells, one at a time, began with cleaning my strainer and heating 500ml water to 120*F.
First shell: 2 level tablespoons Hawaiian Kava, 250ml water, squeezed 5 minutes. Chugged in coconut cup. Delicious, light, woody, refreshing, numbing on tongue.
Second shell: 2 level tablespoons Hawaiian Kava, 200ml water, 50ml milk, squeezed 5 minutes. Chugged in coconut cup. Lighter color, smooth taste, numbing for tongue, seemed possibly stronger than the first shell. I could taste the Kava less, but it appears that it made a slightly stronger shell!
I've got a thick pot of freezer roots and water heating up on the stove to make Kava for the next few days. Thank you for this enjoyable and tasty experiment, I hope my results have given you a better perspective. Adding milk to Kava during brewing may have produced a shell with more kavalactones or speedier absorption of Kavalactones within my loving self.