Coffee lovers brew their pick-me-up drink at temperatures from 81 to 89 degrees Celsius, depending on the type of coffee it is. To make the ideal cup of black tea, it is recommended to infuse the leaves at a temperature of 95 degrees. But the World Health Organization warns of lasting consequences if you drink very hot drinks. It can even lead to oesophageal cancer. Everything below 65 degrees is okay. So, better to check and wait.