You know. I wonder. Both the coarse grind and the effects are similar. "Eva" is a Vanuatu kava, despite it's brand name being a Tongan word, but the cultivar was never specified. It's possible Eva is Borogu... KL% measurements can vary depending on factors like the extraction method used and moisture content, so it is even possible it is not only the same cultivar, but from the same source... I am just speculating; I don't actually know this for a fact.