The walnut Sorrento, native of Sorrento Peninsula, gave rise to a wide range of biotypes whose best production is located in Naples, in the lowlands of Acerra and Nola, but this walnut is also present in other areas such as Caserta, the Flegrea and Picentini.

The valve, in both cases, are smooth and thin; the kernel is white cream flavor pleasant and can easily be removed intact, making this nut is especially appreciated by the confectionery industry and consumers.