Oyster oil is a condiment made from fresh oysters, which contains high salt and sugar, and these ingredients can play a certain role in preservation. If the unopened oyster sauce is stored in a cool and dry environment, it can usually be stored for a long time, ranging from several months to one year. Once opened, the storage life of oyster sauce will be affected. The unsealed oyster sauce should be stored in cold storage as soon as possible, and carefully checked for abnormal smell or signs of deterioration before use. In order to ensure food safety and quality, it is necessary to pay attention to the recommended storage conditions and expiration date on the product label, and eat it as soon as possible before expiration.