Coffee for some cases is believed as drowsiness and can improve power remember. what is it? following are some myths that developed in the community. Coffee should not directly be poured with boiling water. if water is too hot, coffee powder will be burned, and eventually will affect the taste and it's aroma. to get a good coffee drinking, the water temperature is needed around 90 degrees centigrade. so you just to have the water fully cooked. remains still a while ago for thirty seconds, then poured into a glass coffee. so that the temperature remains warm, it is suggested to serve in a porcelain cup that is quite thick.