Castagna: The Queen of October in Bologna

As autumn settles over Bologna, the city and its surrounding mountains come alive with festivals celebrating one of the season’s most important products: the chestnut, or castagna. For centuries a staple food in the Apennine communities south of Bologna, the chestnut now marks October through street food, sagre, and traditional recipes that have survived largely unchanged. From roasted caldarroste sold on street corners to elaborate desserts in trattorias, the castagna is inseparable from the Bolognese autumn. For a broader look at the season, see our guide to autumn in Bologna.

A Historical Staple

Before the widespread cultivation of wheat, chestnuts were a primary source of nutrition for the rural populations of the Apennines. They could be ground into flour for bread and pasta, boiled or roasted for simple meals, or transformed into sweet and savoury dishes. In Bologna, this history is still visible in the traditional recipes passed down through generations — chestnut flour in particular remains a seasonal ingredient found in specialist bakeries and autumn menus across the city and hills.

Castagna in Bolognese Cuisine

One of the most distinctive local specialties is mistocchine — small pancakes made from chestnut flour, once sold by street vendors known as mistocchinaie who cooked them on hot griddles during the colder months. The tradition has largely faded from everyday life but is celebrated at food festivals and on special autumn menus.

Castagnaccio is a dense, rustic cake made with chestnut flour, olive oil, pine nuts, and rosemary — originally a peasant dish, now an autumn staple, often served with ricotta or a drizzle of honey. Marron glacé — chestnuts slowly cooked in sugar syrup until glazed — are found in artisan confectioneries throughout Bologna in October and November. For a more theatrical finish to a meal, Mont Blanc: sweetened chestnut purée piled with whipped cream and dusted with cocoa.

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Chestnut Festivals Around Bologna

October is the month for sagre — community festivals built around seasonal produce. Several take place within easy reach of Bologna:

• Sagra della Castagna, Granaglione — held over several weekends in October and November in this small Apennine town. Roasted caldarroste, chestnut-based dishes from soups to desserts, artisan markets, and live music against a backdrop of autumn mountain landscapes.
• Sagra del Marrone, Castel del Rio — every Sunday in October, celebrating the local marrone, a particularly prized large sweet chestnut variety. Tastings, cooking demonstrations, and folk entertainment in the historic streets of the town.
• Sagra della Caldarrosta, Montepastore — closer to Bologna, focused on the simple roasted chestnut. Vendors roast them over open flames; the festival also features mushrooms, truffles, and artisan cheeses from the surrounding area.
• Sagra della Castagna e del Marrone Tipico, Zocca — multiple weekends in October in this Apennine town, covering both chestnut varieties with a full range of chestnut dishes, a crafts market, and live performances.

The Chestnut and the Land

The chestnut tree was historically called the “tree of bread” because it fed so many Apennine communities through lean winters. Unlike most crops, it thrives in poor mountain soil and harsh conditions — which is precisely why it became so important in places where wheat cultivation was difficult. The harvest still brings together families and villages each October, a connection to agricultural life that the sagre keep visible even as the practical dependency on chestnuts has long passed.

If you want to combine the chestnut season with a day in the mountains, our self-drive guide to the Bologna Apennines passes through several of the villages where these festivals take place.