The boiled h2o (100oC) is introduced to the right temperature with the yeast to work as 10 - 15oC. This temperature will depend on the kind of yeast and the sort of beer. Val grew up in Portland, Oregon but moved to Oahu on the whim back again in 2013. https://saigonlist49257.dm-blog.com/30392532/5-easy-facts-about-sai-gon-described