Cronut — the croissant-doughnut hybrid

i. Origin & history

Dominique Ansel launched the Cronut at his SoHo bakery on 10 May 2013. It was, by his own account, the result of about two months and dozens of iterations, and it went viral almost immediately — queues formed before dawn, a resale market appeared, and the pastry became a shorthand for food-hype culture. Time named it one of the best inventions of that year.

The name is a registered trademark of Dominique Ansel Bakery, and this is the practical reason you rarely see 'Cronut' on anyone else's menu. Other bakeries selling the same idea have to call it something else, which is why the world filled up with 'doissants', 'croughnuts', 'dossants' and simply 'fried croissant doughnuts'. The pastry is not patented — anyone may make it — but the word is owned.

The Cronut is not, strictly, unprecedented. Fried laminated dough exists in other traditions, and various bakers have pointed to earlier fried-croissant hybrids. What Ansel did was define a specific, repeatable product — a particular lamination, a specific frying method in grapeseed oil, a sugar coating, a flavoured cream filling and a glaze, with the flavour changing monthly and never repeating — and market it exceptionally well.

Its wider significance is as the archetype of the 'hybrid pastry' wave that followed: the duffin, the townie, the cruffin and a long tail of others. Most were short-lived. The Cronut has outlasted them, and its monthly-flavour system is still running at Ansel's bakery.

ii. Laminated dough, in hot oil

A Cronut is a laminated dough — layers of dough and butter folded repeatedly so that they separate in the heat — cooked by a method laminated doughs are not normally subjected to. That combination is where all the difficulty lives.

Lamination itself is the standard croissant technique: a butter block is enclosed in dough and given a series of folds, each one multiplying the layer count. The layers puff because the water in the butter and dough turns to steam and forces them apart. Everything depends on the butter staying in continuous sheets rather than melting into the dough or shattering into fragments, which means the dough must be kept cold and rested between folds.

Frying introduces a problem baking does not have. In an oven, heat arrives gradually and the pastry sets as it rises. In oil at around 175 °C, the outside sets almost immediately. If the layers have not begun to separate before the crust forms, they never will — you get a dense fried ring. This is why the proof before frying is critical, and why the oil temperature has to be controlled tightly: too hot and the outside colours before the inside cooks, leaving raw dough; too cool and the pastry absorbs oil and turns greasy.

Proofing is also more delicate than for a baked croissant. The dough must be proofed enough to be light but not so much that the layers weaken and collapse when they hit the oil. And it must be proofed at a temperature below the butter's melting point — a warm proofing box will simply melt the butter out, which is the single most common home failure.

The filling goes in after frying and cooling, injected through several points around the ring so the cream distributes evenly rather than pooling on one side.

iii. Ingredients

Makes 12 servings · scroll the side panel to adjust

• 500 g strong flour
• 60 g sugar
• 7 g instant yeast
• Pinch salt
• 250 ml cold milk
• 2 eggs
• 60 g unsalted butter, soft
• 250 g unsalted butter (lamination block)
• 1 litre oil for frying
• Pastry cream, sugar glaze for finishing

Use a high-fat European-style butter, at least 82% fat, for the butter block — lower-fat butters contain more water, which makes the block harder to sheet and more likely to tear. Strong bread flour gives the gluten strength needed to survive repeated folding, though some recipes cut it with plain flour for tenderness. Grapeseed oil is what Ansel specifies for frying, chosen for its neutral flavour and high smoke point; sunflower or another neutral oil works. The filling is a pastry cream or crème légère rather than whipped cream, which would collapse. Keep everything cold — this is less an ingredient note than the governing principle of the recipe.

iv. Method

1. Make dough; chill 1 hour.
2. Encase butter block in dough; roll and fold (three single folds with 30 min chill between each).
3. Roll out 1.5 cm thick. Cut rings with a doughnut cutter.
4. Prove 60 min. Fry at 170 °C for 90 sec per side.
5. Drain. Fill with pastry cream from the side; glaze the top; roll edges in sugar.

v. Tips & common mistakes

• Keep the dough cold at every stage. Chill for at least thirty minutes between folds. Warm dough lets the butter melt into it, and once that happens the layers are gone and cannot be recovered.
• Proof somewhere cool. Around 24–26 °C, no warmer. A standard warm proofing spot will melt the butter straight out of the lamination, which is the most common way home attempts fail.
• Hold the oil at 175 °C and check it constantly. Use a thermometer. Too hot and the outside browns while the centre stays raw dough; too cool and the pastry drinks oil and turns heavy and greasy. The temperature drops each time you add a pastry, so fry in small batches.
• Do not re-roll the scraps for Cronuts. Re-rolling destroys the layer structure. Fry the offcuts as they are — the 'Cronut holes' are a legitimate by-product — but do not expect laminated results from re-rolled dough.
• Sugar them while hot, fill them cold. Roll in sugar straight out of the fryer so it adheres. Then cool completely before filling; warm pastry melts the cream and turns the interior soggy.
• Fill from several points. Inject at three or four places around the ring rather than one. A single injection point leaves most of the pastry empty and one side overloaded.

vi. Variations

Dominique Ansel's bakery runs a monthly flavour that is never repeated, so the Cronut itself is a moving target — the lamination and method stay fixed while the filling, glaze and sugar coating change. Because the name is trademarked, equivalents elsewhere appear as doissants, croughnuts, dossants and similar. The wider hybrid-pastry family it launched includes the cruffin (croissant dough baked in a muffin tin), the duffin and the brookie. Home bakers often make a shortcut version from shop-bought puff pastry, which fries acceptably but lacks the yeasted lift of true croissant dough.

vii. Serving & storage

A Cronut is meant to be eaten the day it is made, and really within a few hours. Ansel's bakery is explicit about this and does not sell day-old ones. Serve at room temperature — the layers are at their crispest and the filling at its right consistency — with coffee. It is substantial enough to be a single-item breakfast or an afternoon indulgence rather than a component of a larger dessert.

Storage is essentially a lost cause and it is better to plan around that. A filled Cronut will soften within hours as moisture from the cream migrates into the pastry, and refrigeration makes it worse by firming the butter in the layers and turning them waxy. If you have leftovers, keep them at room temperature in a loosely covered container and accept that they are a different, softer pastry by the next day. Unfilled fried rings hold slightly better. Do not freeze filled ones; the cream separates.

ix. More from North American

• Croffle — Korean croissant-waffle
• Doughnut Ice Cream Cone — doughnut cone
• Lava Donut — molten doughnut
• Berliner — German jam doughnuts
• Apple Turnover — French chausson
• Palmiers — puff pastry elephant ears