Red Boat fish sauce has a shelf life of 36 months (three years) from the date of manufacture, and it's recommended to use it within a year after opening.
Here's a more detailed breakdown:
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Unopened: Red Boat labels its fish sauce with a "best-by" date that is typically three years (36 months) from the manufacturing date. Store in a cool, dark place to maximize shelf life.
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Opened: Once opened, it is best to consume Red Boat fish sauce within one year for optimal flavor and quality.
Keep in mind that fish sauce is a fermented product, so it can last a considerable amount of time. However, its flavor may degrade after the recommended period. Always check for any signs of spoilage, such as off-odors or significant changes in color or consistency, before using.