Preparation materials: osmanthus fragrans, rock sugar, and high-alcohol liquor.

Remove impurities from osmanthus fragrans, wash and dry. Prepare a sealed glass bottle with osmanthus and rock sugar in it. Add high-alcohol liquor, seal the bottle mouth and place it in a cool and ventilated place. Shake the bottle gently every few days, so that osmanthus and rock sugar can be fully integrated. It usually takes at least 3 months.