Both sweet gherkins and sweet pickles are cucumbers that have been pickled, typically in a brine of salt and water or vinegar plus spices. A sweet gherkin pickle is a baby cucumber, in fact the name is derived from the Dutch word "gurken", meaning small pickled cucumber. Gherkins are very crispy and pack a lot of flavor. Sweet pickles are made from a variety of different cucumbers, large and small. They're often used to make relishes and are sliced - commonly known as bread and butter pickles. Learn more here.