APULICA / FISH AND SEAFOOD
Mussel of the Gulf of Naples and the Phlegraean coast
PAT · Fish and seafood · Campania
In brief
- It is farmed on long-line systems, in licensed stretches of water between the Gulf of Pozzuoli, the Gulf of Naples and the coast running from Ercolano to Castellammare di Stabia. (Regione Campania, Assessorato Agricoltura — Prodotti tradizionali: Cozza del Golfo di Napoli e del Litorale Flegreo)
- Its shells are symmetrical, elongated ovals in a violet-tinged black; the flesh is deep yellow in females and whitish in males. (Regione Campania, Assessorato Agricoltura — Prodotti tradizionali: Cozza del Golfo di Napoli e del Litorale Flegreo)
- It is harvested in spring and summer, and every stage of the farming is done by hand. (Regione Campania, Assessorato Agricoltura — Prodotti tradizionali: Cozza del Golfo di Napoli e del Litorale Flegreo)
- According to the regional profile, Ferdinand IV had a mussel and oyster farm set up in Lake Fusaro. (Regione Campania, Assessorato Agricoltura — Prodotti tradizionali: Cozza del Golfo di Napoli e del Litorale Flegreo)
History and origin
Mussel farming has always been one of the main livelihoods of the seaside towns between Naples and Vesuvius. The regional profile of traditional products reports a hypothesis put forward by scholars: even before the Greeks founded Cumae, the Oscans, also known as Opici and native to this part of Campania, may have used the waters of Lake Fusaro to raise mussels for food.
Cumae, the national tourism portal recalls, was the first Greek colony of Magna Graecia; later the Romans made the Phlegraean Fields their favourite spa area, with the patrician villas of Baia.
For the Middle Ages the profile mentions mussel farms in the time of Charles of Anjou, and it treats as certain that Ferdinand IV had a mussel and oyster farm set up in the Fusaro. After the cholera outbreak of 1973 the way of farming stayed the same: only some of the materials have changed.
Sources: Regione Campania, Assessorato Agricoltura — Prodotti tradizionali: Cozza del Golfo di Napoli e del Litorale Flegreo · Italia.it — Campi Flegrei · Masaf — Elenco nazionale dei prodotti agroalimentari tradizionali, XXVI revisione (2026)
Area and method of production
The mussels grow in licensed stretches of sea or brackish water, wherever the microbiological, chemical and physical quality of the water allows it. There are three areas: the Gulf of Pozzuoli, with Baia, Bacoli and Capo Miseno; the Gulf of Naples, around Nisida and Castel dell'Ovo; and the coast from Ercolano to Castellammare di Stabia.
The seed is collected on the farms themselves or on natural beds. The young mussels are packed several times into plastic mesh socks and hung in long lines, the reste, tied to a main beam called the strallo and held up by posts that are usually made of wood. All the work is done by hand.
After harvesting, the mussels are separated, cleaned and taken to dispatch centres or, when needed, to purification centres. There they are checked against the legal standards, packed in labelled nets and sent to market in refrigerated vehicles.
How to recognise it
It is a mussel with two matching shells, elongated and oval, black with violet highlights. Inside, the flesh is plump and its colour depends on sex: deep yellow in females, almost white in males.
On the palate the regional profile describes it as briny, with a sweet taste and a slightly bitter finish. That character, the same profile explains, keeps it a fixture in Campania's fish markets and a regular request in restaurants.
The harvest season is spring and summer. It reaches the shops in the usual net bags bearing the label of the purification or dispatch centre, which guarantees the physical and microbiological checks required for shellfish.
Where to taste it
The places of this mussel are the ones where it is farmed: Baia, Bacoli and Capo Miseno in the Gulf of Pozzuoli, Nisida and Castel dell'Ovo in the Gulf of Naples, and the Vesuvian coast from Ercolano to Castellammare di Stabia. According to the regional profile it is found in Campania's fish markets and in restaurants.
The Phlegraean coast is also a travel destination. The Phlegraean Fields, between Pozzuoli, Bacoli, Monte di Procida and the islands of Ischia, Procida and Vivara, are an ancient volcanic caldera with small craters and fumaroles. At Cumae you can visit the Acropolis and the Cave of the Sibyl, while Lake Avernus is where Virgil has Aeneas descend to the underworld.
Ancient Baia, the spa resort loved by the Romans, now lies underwater because of bradyseism and is part of a marine protected area, which is why it is also called the sunken Pompeii.
Sources: Regione Campania, Assessorato Agricoltura — Prodotti tradizionali: Cozza del Golfo di Napoli e del Litorale Flegreo · Italia.it — Campi Flegrei
Protection
- Traditional agri-food product (PAT) — Campania, n. 585, 26th revision (Masaf — Elenco nazionale dei prodotti agroalimentari tradizionali, XXVI revisione (2026))
When
- The sources consulted give no months.