The Quernon d'Ardoise is a chocolate confection unique to Angers — a ganache of praline and nougatine enrobed in blue-tinted chocolate, designed to resemble the distinctive blue-grey ardoise (slate) tiles that roof every building in the Anjou. Created by the Maison Benoit Chocolats in 1963, the quernon (from 'cornon,' an old Angevin dialect word for 'corner,' referencing the slate tile's angular shape) has become Angers' most recognized edible emblem and an official Patrimoine Gourmand de l'Anjou. The construction is precise: a center of praline (caramelized hazelnuts and almonds, ground to a paste) is layered with shards of nougatine (caramelized sugar with sliced almonds), creating a textural contrast between smooth and crunchy. This center is cut into rectangular tiles and enrobed in dark chocolate tinted with blue cocoa butter to achieve the distinctive slate-blue color. The visual effect is striking: a plate of quernons genuinely resembles a pile of miniature roof slates, the blue-grey color exact to the local stone. The flavor is primarily nutty and caramelized, with the dark chocolate providing bitter balance. The Benoit family guards the recipe, and while other chocolatiers in Angers produce their own versions, the original remains the standard. Quernons are sold in slate-colored boxes, given as gifts, served at the end of Angevin meals with coffee, and have become the subject of an annual Fête du Quernon. They represent the Loire confiseur tradition at its most inventive — a modern confection (1963) that has already become deeply traditional, proving that culinary heritage is continuously created.
Praline + nougatine center in blue-tinted dark chocolate. Shape mimics Angers' slate roof tiles. Created by Maison Benoit, 1963. Quernon = 'cornon' (Angevin for corner/angular). Blue color from blue cocoa butter. Nutty, caramelized, with bitter chocolate balance. Patrimoine Gourmand de l'Anjou.
Buy from the Maison Benoit on Rue des Lices in Angers for the original recipe. Let the quernon temper to room temperature before eating — the praline flavor develops fully at 18-20°C. Pair with an Anjou marc or a Cointreau (also from Angers) as a digestif accompaniment. For a dessert presentation, arrange quernons on a slate board for the full visual joke. Ask for the boîte d'ardoise (slate box) packaging for the most traditional presentation.
Expecting milk chocolate (the enrobing is dark chocolate with cocoa butter — blue but not sweet). Storing in the fridge (chocolate bloom — keep at 16-18°C). Biting straight through (break in half first to appreciate the praline-nougatine layering). Confusing with generic chocolate truffles (the texture is crunchy, not soft). Assuming it's an ancient recipe (1963 — it proves tradition can be modern).
Patrimoine Gourmand de l'Anjou; Les Confiseries de France — Philippe Labro