PProvenance
Enter
P
Corsican

Castagnaccio Corse — Chestnut Oil Cake of the Island

Castagnaccio is the one chestnut preparation shared between Corsica and Tuscany — a flat, dense cake of chestnut flour, olive-oil, water, pine nuts, raisins, and rosemary — but the Corsican variant diverges in its use of Oliu di Corsica AOP (Corsican olive oil) and farine de châtaigne corse IGP, both of which carry island-specific flavour compounds. The batter is thin — poured to a depth of no more than 1.5cm in a lightly oiled shallow pan — and baked at 180°C for 30–35 minutes until the surface cracks and the oil pools in the fissures. The result is unlike any conventional cake: dense, slightly chewy, almost savoury despite the chestnut sweetness, with rosemary and pine resin prominent and the olive oil providing the only fat. Traditional Corsican castagnaccio uses a darker, smokier chestnut flour than the Tuscan version, which gives it a more complex aromatic background. It is an All Saints Day preparation in many villages — baked on the evening of November 1st when the chestnut season's first flour is available.

‹Swipe for the next dish›
ServesEight portions
Total45 minutes, plus 4 hours resting
Sourced1of 9 in BC
Cook
‹ Previous · Cannelloni au Brocciu — Brocciu-Stuffed Baked Pasta|Next · Castagnettes — Chestnut-Flour Shortbread Rounds ›
I

The Market List

The benchmark for each ingredient, and who stocks it near you. Tap a stockist to go straight to the product.

500 g
farine de châtaigne corse IGP
dark, smoky-grade Corsican chestnut flour; sifted
Not yet stocked in British Columbia
750 ml
cold water
added gradually to achieve a thin, pourable batter
Your own market
80 ml
Oliu di Corsica AOP extra-virgin olive oil
divided: 50 ml into batter, 30 ml drizzled over surface before baking
Your own market
60 g
pine nuts
whole, untoasted
Not yet stocked in British Columbia
60 g
raisins
plumped 10 minutes in cold water, drained
Not yet stocked in British Columbia
4 sprigs
fresh rosemary
leaves stripped; dried rosemary must not be substituted
Your own market
1 tsp
fine sea salt
Your own market
To serve (optional)
1 sliver per portion
brocciu passu
aged Corsican ewe's-milk cheese
Not yet stocked in British Columbia
1 tsp per portion
chestnut honey
drizzled over at table
Origin · New ZealandPurely Artisan Foods · San Diego →

Each tap is counted, so the stockist sees the demand Provenance sends them.

II

The Method

1
Heat the oven to 180 °C. Lightly oil a shallow baking pan — tin or earthenware — with a little of the measured Oliu di Corsica. The pan must be large enough that the batter, once poured, sits no deeper than 1.5 cm; a deeper pour will not dry through. The oil coat is the only preparation the pan requires. Done when the base glistens with a thin, even film.
2
Sift the chestnut flour and salt into a wide bowl. Add the cold water in a slow, steady stream, whisking constantly, until the batter is thin, smooth, and fully pourable — no lumps of flour remaining. Work patiently; chestnut flour resists hydration. Stir in 50 ml of the olive oil. The finished batter should coat the back of a spoon only lightly and run off it in a ribbon. Done when the surface of the batter shows no dry streaks and flows freely when the bowl is tilted.
3
Fold in the drained raisins and pine nuts. Pour the batter into the prepared pan; it must settle to a depth of no more than 1.5 cm — this is where the dish lives or dies. A batter poured thicker will remain gummy at the centre regardless of oven time, and there is no correcting it once baked. Scatter the fresh rosemary leaves evenly across the surface, then drizzle the remaining 30 ml of olive oil over in a thin, even stream. Done when the oil pools visibly in small depressions across the top of the raw batter.
4
Slide the pan into the centre of the oven and bake at 180 °C for 30–35 minutes. Do not open the oven before the 30-minute mark. Baking past 35 minutes will make the cake brittle and excessively dry; the window is narrow. Done when the surface has cracked into a dark beige-brown map of fissures with olive oil visibly pooled in each crack, and the edges have begun to pull away from the pan.
5
Remove from the oven and leave the castagnaccio in its pan at room temperature for a minimum of four hours before cutting. Do not attempt to slice while warm — the interior will be gummy and the cut will be ragged. The resting period allows the interior texture to settle from gummy to dense and yielding. Done when a clean knife drawn across the surface meets no resistance and the slice holds its edge without crumbling.
6
To serve, cut into portions and place each on a plate with a sliver of brocciu passu and a drizzle of chestnut honey. The aged cheese and honey transform castagnaccio from a simple cake into a composed Corsican dessert plate. Done when the aroma at the table carries chestnut sweetness, rosemary resin, and the vegetal note of the olive oil in balance — no single element dominating.
From the canon — Brocciu passu is the aged form of brocciu — the same whey curd, salted and set aside for a minimum 21 days, during which a dry rind forms and the interior fi… Brocciu Passu — Aged Brocciu and Rind Development →
III

Quality Hierarchy

01
Reserve — Farine de châtaigne corse IGP milled from the first chestnuts of the Castagniccia season (November harvest); Oliu di Corsica AOP cold-first-pressed; brocciu passu from a named Corsican producer; wild-gathered chestnut honey.
02
Estate — Certified farine de châtaigne corse IGP from a named mill; Oliu di Corsica AOP from a single domaine; commercial brocciu passu; artisan chestnut honey.
03
Market — Corsican chestnut flour IGP without harvest-date specification; any quality Corsican AOP olive oil; chestnut honey of unspecified origin.
04
House — Dark-grade chestnut flour of non-Corsican origin (accepts that the result approaches the Tuscan castagnaccio toscano rather than the Corsican variant); a robust Ligurian or Sicilian extra-virgin olive oil; pine honey in place of chestnut honey.
IV

Sensory Tests

◇Sight. Dark beige-brown surface crossed by cracks in which olive oil has visibly pooled; perfectly flat, no rise whatsoever.
◇Touch. Dense and yielding when fully cooled; a knife draws a clean edge with no gummy resistance and the slice holds its shape.
◇Smell. Chestnut sweetness, rosemary resin, and vegetal olive-oil in balance at the moment of cutting — no scorched or bitter note.
◇Where it lives or dies. The batter must be poured to a depth of no more than 1.5 cm; a deeper pour will not dry through and no amount of oven time can correct a gummy centre.
Pillar V
Cross-cuisine parallels are part of membership.
The dishes this one teaches you, across the cuisines — on every recipe.
Enter · from $49 a year
VI

What to Pour

The pairing
El Silencio Espadin Mezcal
El Silencio Mezcal · Oaxaca — Mezcal
Not yet stocked in British Columbia
Agave spirit
From British Columbia

Nothing from British Columbia holds against this yet.

Without alcohol

No pour without alcohol holds against this yet.

Why each one works is part of membership — Enter · from $49 a year →

The whole pairing
Pillar VII
Origin and lineage are part of membership.
Where the dish comes from and how it came to be — on every recipe.
Enter · from $49 a year
Sourced through Provenance

The hands behind the plate.

Purely Artisan Foods
San Diego · chestnut honey
→
← PreviousCannelloni au Brocciu — Brocciu-Stuffed Baked PastaOne standard · no exceptions