Lebot, Merlin and Lindstrom's Kava: The Pacific Drug (1992) documents the ceremony's structure across Fiji, Tonga and Samoa, where it takes somewhat different local forms under names including yaqona in Fiji and ava in Samoa. The root of Piper methysticum is pounded or, in some traditional practice, chewed, then mixed with water in a large communal bowl, called a tanoa in Fijian usage, and strained through fibrous plant material to remove solids. The resulting drink is served from the bowl in a fixed order that reflects the social rank of those present, beginning with the highest ranking or most honored person, accompanied by formal speech, seating arrangements and clapping conventions that vary between island groups but consistently encode status and respect.
The mildly sedative and mood altering effect of the drink, produced by kavalactones in the root, is part of why the ceremony carries the weight it does: it is not simply a beverage shared socially but a substance whose consumption is bound tightly to formal protocol wherever it is served.
The order and manner of serving also communicates information about the relationship between host and guest communities: a visiting delegation's kava ceremony on arrival, still practiced today across much of Fiji and Tonga, formally establishes the terms on which the visit proceeds, and refusing or mishandling a served bowl can carry serious social consequence.