1. Preprocessing Cleaning: Remove dirt and impurities. Sorting: Remove non-conforming leaves. Cutting: Cut into sections or shreds as needed. Blanching: Short term hot water or steam treatment to maintain color and nutrition. 2. Drying process Loading: evenly spread to avoid excessive thickness. Initial drying: Temperature 40-50 ℃, time 1-2 hours, remove surface moisture. Main drying: temperature 50-60 ℃, time 4-6 hours, remove most of the moisture. Final drying: Temperature 60-65 ℃, time 1-2 hours, ensure that the moisture content meets the standard (usually 5-8%).
