Sour Cherry Clafoutis — cherries baked in a soft vanilla custard batter

i. Origin & history

Clafoutis comes from the Limousin, a rural region of central France around Limoges, where it was a farmhouse dessert made in early summer when the cherry trees fruited. It spread to Paris and the rest of France in the nineteenth century and has been a fixture of French home cooking ever since. The name is generally traced to the Occitan verb clafir, "to fill" — the batter fills the dish around the fruit — and the spelling is variously clafoutis (standard French, singular and plural) or clafouti.

The traditional Limousin clafoutis is made with small, dark, sweet cherries, often the local black varieties, and the cherries are left whole with their stones in. Two reasons are given. Practically, unpitted cherries keep their juice inside instead of bleeding into the batter. And as the cake bakes, the kernels release a faint bitter-almond aroma — from the same compounds that flavour almond extract — which many cooks consider essential to the taste.

The dessert also has a famous naming rule. In the Limousin, only the cherry version is properly called clafoutis; the same batter baked with apples, pears, plums or prunes is a flaugnarde. A frequently repeated story holds that when a French dictionary defined clafoutis loosely as a kind of fruit flan, Limousin cooks protested until it was amended to specify cherries. Outside the region the rule is cheerfully ignored, and "apricot clafoutis" and "pear clafoutis" are menu standards.

Sour cherries sit comfortably inside the tradition. Morello and Montmorency-type cherries, called griottes in French, are widely grown in France and used for jams, liqueurs and baking. Because they are so tart, they make a brighter, more vivid clafoutis that many cooks prefer — as long as the sweetness of the batter is adjusted to match.

ii. Why sour cherries need a different balance

Can you use sour cherries in a clafoutis? Yes, and they are excellent, but they change three things. First, they are much more acidic than sweet cherries, so the batter needs a little more sugar to balance them — not enough to make the cake cloying, just enough that each mouthful of tart fruit is set against sweet custard. A sprinkle of sugar over the fruit before baking also helps.

Second, sour cherries are juicier and softer. Pitted sour cherries release a lot of liquid into the batter, which can leave the bottom wet and streaked with pink. Tossing the pitted fruit with a teaspoon of flour, or briefly macerating it in sugar and draining off the juice (which can be reduced into a syrup to pour over), keeps the custard clean. Leaving the stones in, as the Limousin tradition does, solves the problem more simply, though it requires a warning to anyone eating it.

Third, sour cherries collapse more readily in the oven. That is part of their charm — they turn jammy and almost melt into the custard — but it means a slightly hotter, shorter bake suits them better than a long gentle one.

The batter itself works like a crêpe batter baked in a dish. It contains very little flour; most of its structure comes from eggs. In the oven, steam lifts it dramatically and the egg proteins set; as it cools, it sinks into a dense, trembling custard. Melted butter in the batter and a buttered, sugared dish give the edges a lightly caramelised, chewy crust, which for many people is the best part.

iii. Ingredients

Makes 6 servings · scroll the side panel to adjust

• 500 g sour cherries (griottes), fresh or frozen
• 20 g butter, soft, for the dish
• 2 tbsp caster sugar, for the dish and fruit
• 3 large eggs
• 110 g caster sugar, for the batter
• 60 g plain flour
• 1 pinch salt
• 300 ml whole milk
• 30 g unsalted butter, melted
• 1 tsp vanilla extract
• 2 tbsp kirsch (optional)
• 1 tbsp icing sugar, to dust

Sour cherries are in season briefly in July; out of season, use frozen pitted sour cherries, or drained jarred Morello cherries (reduce the sugar in the batter slightly if they are in syrup). For the classic Limousin version, use 500 g sweet black cherries, leave the stones in and cut the batter sugar to 90 g. Whole milk gives the traditional texture; replacing 100 ml with double cream makes it richer. Kirsch, the cherry-stone brandy, deepens the cherry flavour; a few drops of almond extract give a similar note if you have pitted the fruit. For a gluten-free clafoutis, use cornflour or rice flour instead of wheat flour.

iv. Method

1. Heat the oven to 190 °C (375 °F), fan 170 °C. Butter a 24 cm ceramic baking dish or 23 cm cast-iron pan generously and sprinkle with 1 tbsp sugar.
2. Pit the cherries if you like, working over a bowl to catch the juice. If using frozen cherries, thaw and drain them well. Toss the fruit with the remaining 1 tbsp sugar and spread in a single layer in the dish.
3. Whisk the eggs and 110 g sugar until pale and slightly foamy. Whisk in the flour and salt until smooth, then gradually whisk in the milk, melted butter, vanilla and kirsch. The batter should be thin, like single cream; blend briefly if there are lumps.
4. Pour the batter gently over the cherries; some fruit should poke through the surface.
5. Bake for 30–35 minutes, until puffed, golden brown at the edges and just set in the centre — a knife slipped into the middle should come out clean, and the whole cake should wobble only slightly.
6. Cool for at least 15 minutes; it will sink as it cools. Dust with icing sugar and serve warm or at room temperature.

v. Tips & common mistakes

• Adjust the sugar to the fruit. Taste a cherry. Very sour Morellos need the full amount; sweeter sour-cherry varieties or black cherries need less.
• Drain frozen or jarred cherries well. Excess juice turns the custard pink and soggy. Reduce the drained juice to a syrup and serve it alongside.
• Warn guests about stones. If you follow tradition and leave them in, tell everyone before they take the first spoonful.
• Use ceramic or cast iron. These retain heat evenly, giving a custardy middle and caramelised edges. A thin metal tin can burn the base.
• Do not overbake. The centre should still be soft; overbaked clafoutis turns rubbery and weeps.
• Serve it warm, not hot. The flavour of the cherries and vanilla comes through best once the cake has settled for 15–30 minutes.

vi. Variations

The classic Limousin clafoutis uses whole, unpitted sweet black cherries. The Auvergne milliard (or millard) is a near-identical cherry dessert from the neighbouring region. With any other fruit, the dish becomes a flaugnarde — apple, pear and prune are the traditional choices. Some modern recipes add ground almonds to the batter for a richer, more cake-like texture, or replace part of the milk with crème fraîche.

Further afield, the Breton far breton is a denser prune batter cake, and the British batter pudding tradition gives the same idea in savoury form. For other ways with cherries and red fruit, see the Black Forest Schwarzwälder Kirschtorte, the Danish Christmas risalamande with its warm cherry sauce, or the berry soufflé.

vii. Serving & storage

Bring the clafoutis to the table in its dish and cut it into wedges or spoon it into bowls. It needs nothing more than a dusting of icing sugar, but a spoonful of crème fraîche, a little pouring cream or vanilla ice cream is welcome. In France it is eaten as a family dessert after a summer lunch and, cold, as a snack the next day.

Clafoutis is best on the day it is baked. Cover and refrigerate leftovers for up to 2 days, and bring them back to room temperature or warm briefly in a low oven before serving. The batter can be mixed up to a day ahead and kept in the fridge; whisk before pouring. It does not freeze well — the custard turns watery when thawed.

ix. More from French

• Flaugnarde — clafoutis with other fruit
• Berry Soufflé — hot red-fruit soufflé
• Pear Tart — tarte Bourdaloue
• Apricot Crumble — stone fruit under crumble
• Schwarzwälder Kirschtorte — Black Forest gâteau
• Risalamande — Danish rice pudding, cherry sauce