Process requirements 1. Forsythia leaf green tea (greening process) is made from fresh Forsythia suspensa leaves as raw materials, through selection, drying, shaking, fixing, rolling, drying and other processes. 2. Forsythia leaf black tea (fermentation process) is made from fresh Forsythia leaves as raw materials, through selection, drying, shaking, rolling, fermentation, drying, packaging and other processes.