The Kava Bowl is a Trader Vic's communal bowl cocktail recipe from the 1940s. The recipe can be found the in Trader Vic's Tiki Party! book, among other locations (like the Total Tiki app for iOS). The vessel is the new Ocean Debris bowl from Munktiki Imports, designed by Miles from from Munktiki and Doug Horne.
Episode on Lost Spirits' newer Navy Style rum, coming (very) soon.