The boiled drinking water (100oC) is brought to the appropriate temperature for the yeast to operate as 10 - 15oC. This temperature is dependent upon the sort of yeast and the sort of beer. Val grew up in Portland, Oregon but moved to Oahu on a whim again in 2013. https://kameronyrrqo.techionblog.com/29807431/the-definitive-guide-to-sai-gon-list