Although it is usually called ginger tea, this ginger-based drink is better described as a ginger infusion. It can be made by simmering sliced ginger in hot water, but in South Korea (saenggang-cha) and Japan (shōgayu), it is often prepared with a mixture of honey and grated ginger.
The combination is stored, and it is then just mixed with water. Some variations will also include lemon or starch. The drink is commonly enjoyed as a health remedy, and it can either be made as a hot or cold beverage. Ginger tea comes in numerous variations that are found in various Asian countries.