Roselle tea, also known as hibiscus tea, is a popular herbal drink in Taichung. It is made from the dried calyx of the roselle flower, which gives the tea its vibrant red color. Roselle tea has a tart and slightly floral flavor, making it a refreshing beverage. It can be enjoyed hot or cold and is often sweetened with honey or sugar. Roselle tea is known for its health benefits, including its high antioxidant content and potential to lower blood pressure.