How to preserve Wuxi mannan herring for a long time?

1. Put the dried herring into a fresh-keeping bag and put it in the freezer for better fresh-keeping effect.

2. wrap the herring in clean kitchen paper and put it in a cool, dry and ventilated environment, which can be preserved for a long time. Take it out when eating, and wash the surface with water to make food.

3. Soak dried herring in vegetable oil, which can be preserved for a long time and kept in a sealed environment.