The shelf life of caviar depends on where it is stored. If the jar is sealed, it can be stored in the refrigerator for at least a few weeks and up to two months. The main thing is to monitor the temperature.
If the caviar is already opened, it should be eaten within a day or two. Otherwise it will break. At room temperature, this product will last no more than two hours.
The ideal temperature for storing caviar is -2 degrees Celsius. Once opened, this product should be placed in an airtight container, even better if the packaging is vacuum sealed. Minimize the caviar’s exposure to air: this will prevent it from drying out. Finally, do not freeze caviar as this will ruin its flavor and texture.
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Source: Ferra

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