Wintermelon tea is a popular traditional Taiwanese drink that can be found in Taichung. It is made by brewing dried wintermelon slices with tea leaves and then sweetening it with sugar or honey. The resulting drink is light, refreshing, and slightly sweet. Wintermelon tea is often served cold and is a popular choice during hot summer months. It is a great option for those looking for a non-caffeinated beverage with a unique flavor.