Kavalactone delivery and between-batch variability across five preparers in traditionally hand-prepared kava: An exploratory study of the 12-ounce shell
Six hand-prepared batches, five commercial preparers, one recipe: 337.0 and 377.7 mg kavalactones per 12 fl oz shell across two lots (CV 8.6% and 6.7%), with the batches that left the least dry marc delivering the most.

