2. Whether it is old vinegar or white vinegar, it mainly plays a role in regulating the sour taste of cold cucumber, so that cold cucumber tastes sour and delicious, so different people can choose according to their own tastes.

3. Compared with aged vinegar, white vinegar has a pure sour taste. People who like to eat sour taste can choose white vinegar, while aged vinegar tastes sweet and sour. People who can't eat sour can choose aged vinegar.