1. Sun-dry the osmanthus. After drying, the fragrance of the osmanthus will remain.

2. Do not place it in a ventilated place. If the osmanthus is placed in a ventilated place, the fragrance of the osmanthus will dissipate quickly, so it can be placed in a cool place.

3. Make osmanthus cake. Friends who like to eat osmanthus cake can make osmanthus cake into osmanthus cake.

4. The fragrance of osmanthus will stay longer when made into osmanthus cake.