Frozen zongzi leaves can still be used after one year. If necessary, soak in hot water for a while, it tastes as fragrant as when you just bought it, and the cooked zongzi leaves are not easy to crack. Leaves can be reused. Wash and dry after eating, and then put it in a cool, ventilated and dark place. The aroma of reused zongzi leaves is not as strong as before, so the aroma may decrease when it is used to wrap zongzi.