Because a pickle is a pickle, right? Well, there is in fact a difference, but it's a subtle one. In general terms, a gherkin is simply a small type of cucumber used specifically for pickling purposes.

Fresh gherkins are in season from June to October, but pickled gherkins can be found year-round. If buying fresh gherkins, look for small, firm, unblemished specimens. Pickled ones should be ...

Store fresh cucumbers in the fridge for up to one week. Small examples, or sliced cucumbers can be pickled very successfully: pickled cucumbers are also known as gherkins or cornichons.