1. Soak the black tea bag in boiling water for 2 minutes, take it out, and let it cool naturally.
2. Pour into an ice tray and freeze into blocks.
3. Green lemon slices.
4. Brew with cold boiled water.
5. Add rock sugar, soak for 20 minutes, soak the lemon flavor and melt the rock sugar.
6. Finally, add ice cubes frozen in advance.
Tips:1 Soak the lime with warm water and cold water, it will be more bitter with boiling water.
2 Put half a lime in a cup of water, and too much water will also cause bitterness.
