Eddike, der har været lagret i mere end 180 dage, betegnes som en duftende eddike (»Fragrant Vinegar«), og en duftende eddike fra Zhenjiang, der har været lagret i mere end 365 dage, betegnes som en moden eddike (»Mature Vinegar«).
Depending on length of storage, Zhenjiang Xiang Cu is divided into two categories, viz. ‘Fragrant Vinegar’, which is the regular form with a storage period of over 180 days, and ‘Mature Vinegar’, which refers to Zhenjiang Fragrant Vinegar with a storage period of over 365 days.