Oyster sauce's shelf life depends on whether it's opened or unopened and how it's stored.
Unopened Oyster Sauce
Unopened oyster sauce, stored in a cool, dark pantry, typically lasts for 18 to 24 months. However, always check the "best by" date printed on the bottle for the most accurate information.
Opened Oyster Sauce
Once opened, oyster sauce should be refrigerated. Its quality remains best for 3 to 6 months in the refrigerator after opening. While it might remain safe to consume beyond this timeframe, the flavor and texture may degrade. The high salt and sugar content act as preservatives, extending its shelf life considerably. However, refrigeration is crucial to maintain its quality and prevent spoilage.
Factors Affecting Shelf Life
Several factors influence how long your oyster sauce stays fresh:
- Storage: Proper refrigeration significantly extends the life of opened oyster sauce.
- Quality of the product: The manufacturing process and ingredients used can affect the initial quality and shelf life.
- Contamination: Avoid cross-contamination; use clean utensils when scooping out the sauce.
In summary: While unopened oyster sauce can last up to two years, opened oyster sauce should be refrigerated and used within 3-6 months for optimal quality. Always prioritize sensory checks; discard if you notice any off-odors, mold, or changes in texture.
