Lemons

One of the famous characteristics of the Sorrentine Peninsula are the terraces (macerine) that cling to the sides of the mountains (the Monti Lattari), on them you'll see groves of lemon trees.

According to the Sorrento Tourism web site, lemons were brought to Campania by the Arabs.  Recognized as a remedy for scurvy, lemons groves were cultivated in Maiori, Minori and Cetara in the 10th and 11th centuries, and they still exist today.

The lemons of Sorrento and the Amalfi Coast are special enough to have gained terrirotial status, indicated by IGPs (Indicazione Geografica Protetta) for each.

They are both fragrant and sweet, and are used to make the region's famous limoncello liqueur.  It's hard for me to believe it now, but the first time I tried limoncello I didn't like it.  I've come to realize that limoncello comes in a lot of varieties, and the lemons it is derived from determine the taste.

Italians drink limoncello, and other digestivi, after a meal to soothe the stomach.  If you've never had it, you must try one (or several) of the local brands while there.