Yes, sake can be enjoyed either warm or chilled. To warm sake, pour it into a small container and put it in a microwave with the lowest setting or with a temperature around 40 - 50°C. Don’t use a higher setting or temperature as sake will start to evaporate and degrade its flavor. It is also common to warm sake in hot water. Boil the water and turn off the heat source once it’s boiled. Put the container in the water for 2 – 3 minutes.