What it is
A savoury potato cake from Naples: mashed potatoes enriched with milk, eggs, cheese and nutmeg, layered with salumi and stretched-curd cheeses, then baked.
Origin place card
A Naples household and festive table dish whose name carries the French court-cook echo of gâteau.
Verified history
The source explains the term as deriving from French gâteau and frames the dish as a nutritious one-dish preparation that keeps well at room temperature. Treat this as source-supported tradition/history from Regione Campania — Gattò di patate; the current evidence does not independently establish a founder, precise origin date, first attestation, or archival origin beyond that source framing.
Local hypothesis
Like sartù and other Neapolitan rich timbales, gattò reflects the meeting of domestic economy and the French-influenced culinary language of elite Naples.
Local legend / oral tradition
No legend documented; oral fieldwork should collect family rules about provola drying, nutmeg and whether salame Napoli is obligatory.
Ingredients
Yellow-fleshed potatoes, milk, eggs, Parmigiano or pecorino, nutmeg, pepper, cooked ham, salame Napoli, scamorza/caciocavallo/provola/fiordilatte, breadcrumbs, butter. Source-supported detail: Si aggiungono latte, uova preventivamente sbattute, parmigiano o pecorino grattugiati, noce moscata, pepe, e si impasta con le mani; si pone l'impasto in una teglia da forno precedentemente imburrata; dopo il primo strato si pone un ripieno, tagliato a dadini,
Method
Boil and mash potatoes, mix with milk, beaten eggs, grated cheese, nutmeg and pepper, layer in a buttered baking dish with diced salumi and dried cheeses, cover, breadcrumb, dot with butter and bake. Source-supported detail: Descrizione delle metodiche di lavorazione si lessano le patate intere in acqua salata, preferendo quelle a pasta gialla, compatte; una volta lessate, si sbucciano e si passano nell'apposito attrezzo (schiacciapatate).
Ritual / calendar
Si ricopre lo strato di salumi e formaggi con altro impasto di patate, si pongono abbondante pangratto, formaggio grattugiato, fiocchetti di burro sulla superficie superiore, spennellando con rosso d'uovo sbattuto, e ponendo in forno caldo.
Why travel for it
This page should make visitors want to eat in a Naples home as much as in a restaurant.
Recreate-it pathway
Test cheese moisture carefully; the source stresses drying provola/fiordilatte in the refrigerator before use.
Editorial warning
Official descriptive source supports the page seed. Do not promote to final tested recipe until household/fieldwork variant and quantities are recovered.
Fieldwork questions
Recover named local cooks, household variants, exact quantities, equipment, occasion, and where it is still served today.
Photo brief
A cut wedge showing the potato layers and cheese/salumi filling; crumbs on a simple ceramic plate.