Where does the best kava come from?

I'm curious, where does the finest KAVA originate from? I understand that kava is a traditional drink in the Pacific Islands, and that its quality can vary greatly depending on the region and growing conditions. Could you elaborate on which areas produce the most prized and flavorful kava, and what factors contribute to its superior taste and potency? Is it the soil, the climate, or a unique combination of both? Additionally, are there any particular methods of cultivation or preparation that are employed to enhance the quality of the final product? I'd be interested to learn more about the intricacies of this fascinating plant and its place in the global market.