Expiration & Storage Tips
When does fish stock expire?
Fish stock, just like any other homemade stock, doesn't contain preservatives, so it doesn't last as long as commercial equivalents. After making it, you can store it in the refrigerator for up to 3-4 days. If you want your homemade fish stock to last longer, consider freezing it. In the freezer, it can last up to 4-6 months, provided it's stored in a well-sealed container or freezer bag. Store-bought fish stock bottles or cartons usually have a use-by date, which is typically a year or more from the production date. Once opened, it should be used within 2-3 days when refrigerated. Freezing opened store-bought stock is generally not recommended due to quality considerations.
How do you tell if fish stock is bad?
If the fish stock has gone bad, you will notice several signs. First, check for a sour or off smell. Fresh stock should have a clean, seafood aroma. Secondly, look at the color and texture. If it has become cloudy or there's a film or discoloration on the surface, it's likely spoiled. Finally, if you see mold, this is a clear sign that the stock has gone bad and should not be used.
Tips for storing fish stock to extend shelf life
• Always store fish stock in the refrigerator or freezer in a tightly covered container.
• For long-lasting storage, freeze fish stock in small quantities, such as in ice cube trays or muffin tins; once frozen, transfer to a zipper-lock freezer bag. This way, you can easily use the required amount in your recipe without having to defrost the entire quantity.
• Use high-quality, airtight containers to avoid freezer burn.
• Label containers with the date of preparation to keep track of storage duration.
• If using in small amounts, consider reducing the stock to a demiglace before freezing. It takes up less space and can be easily diluted with water when needed.