The boiled h2o (100oC) is brought to the right temperature for your yeast to function as 10 - 15oC. This temperature is determined by the sort of yeast and the sort of beer. The largest problem of using the bus in Saigon is working out all the a person-way streets, https://franciscoivdkr.blogmazing.com/29680313/the-best-side-of-sai-gon