Marrone di Castel del Rio

Established in 1996 as a Protected Geographic Indication within Emilia-Romagna, the Marrone di Castel del Rio encompasses a production zone restricted to four specific municipalities, starting alphabetically with Borgo Tossignano. What distinguishes this chestnut denomination from its regional peers is its highly unusual modern status: despite its long-standing EU registration, official agricultural registries record exactly zero verified producers actively operating under the IGP designation. This stark absence of certified commercial growers sets the geographic boundary apart, turning this particular sweet chestnut origin into an intriguing legal and agricultural anomaly within the Italian food registry rather than an active commercial export.