(1) Preparation equipment: tea, cold water, plastic bottles, water filters and other containers. (2) The ratio of cold boiled water to tea is about 50 ml to 1 gram, which can be increased or decreased according to individual taste, and then placed in the refrigerator. (3) After about 8 to 10 hours, the tea soup can be poured out for drinking, and the tea tastes delicious. (4) If you have not finished drinking, please put it in
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