The boiled water (100oC) is introduced to the right temperature with the yeast to work as 10 - 15oC. This temperature depends upon the type of yeast and the sort of beer. We essentially wrote a complete guideline about searching in Ho Chi Minh City that you need to check https://sai-gon93580.topbloghub.com/34820759/helping-the-others-realize-the-advantages-of-sai-gon-list