Answer

Not really. Cornichons are spiced slightly differently, and cost more. But, they’re basically the same: tiny pickled cucumbers.

Answer

Contrary to popular believe, gherkins are not cucumbers.

Gherkins and cucumbers are related but not the same plant race.

This is a slight difference botanically, but quite a difference in taste and appearance.

Cornichons are indeed harvested before they are fullgrown. After that they are pickled according to a French recipe. This results in pickles that are slightly less salty then the average pickled gherkin.