The boiled water (100oC) is introduced to the right temperature to the yeast to work as 10 - 15oC. This temperature is determined by the kind of yeast and the type of beer. Val grew up in Portland, Oregon but moved to Oahu with a whim back again in 2013. https://riveravvso.fireblogz.com/61088084/the-definitive-guide-to-sai-gon-list