Corsica — châtaigneraie belt (above 400m); wood-fired oven tradition; island-wide variation. Techniques

Pain de châtaigne is Corsica's everyday chestnut bread — a mixed-flour loaf that blends farine de châtaigne corse IGP (typically 30–40% of total flour) with Triticum aestivum plain-flour and bread-flour, giving it a dense crumb, a dark beige-brown colour, and the chestnut-sweet aromatic absent from any wheat-only loaf. The chestnut flour does not produce gluten — it is the wheat flour that provides the structural network — so the ratio of chestnut to wheat determines texture: higher chestnut ratios (50%+) produce a very dense, crumbly loaf; lower ratios (20–30%) produce a lighter loaf with a more subtle chestnut note. The dough requires a longer fermentation than pure wheat bread because the chestnut starch interacts with the yeast more slowly. Baked in a wood-fired oven at 220°C, the loaf develops a thick, crackling crust and a dense, moist crumb that holds its structure for two to three days without going stale. Pain de châtaigne is the essential accompaniment to every Corsican charcuterie board and the bread torn into bowls of minestra and aziminu.