Choux Pastry for Cream Buns at Home

There is a moment in every home baker's life when a tray of choux buns comes out of the oven, puffed and golden and improbably hollow, and the whole idea of "shop-bought" loses its grip. Choux looks like wizardry, but it is really just flour, water, butter and eggs put through one very specific set of steps. Get those steps right and you can turn out cream buns at home that crackle under the teeth and give way to clouds of softly whipped cream.

What Makes Choux Rise

Unlike a scone or a sponge cake, choux relies on steam and structure rather than a raising agent. The flour is cooked twice: first on the hob in a butter-and-water paste, which gels the starch and allows it to absorb far more liquid than it could normally hold, then in the oven, where the trapped water turns to steam and pushes the shell outwards. The egg sets the structure around those steam pockets as it coagulates, while the fat keeps the finished shell crisp rather than leathery. Under-bake it and it will collapse; make the paste too stiff and it will refuse to puff at all.

Cook the Paste Until It Shines

Put 60g of unsalted butter, 150ml of cold water, a good pinch of fine sea salt and a teaspoonful of caster sugar into a heavy saucepan. Bring it slowly to a rolling boil, so the butter melts fully before the water has a chance to disappear. The moment it is properly bubbling, tip in 75g of strong white bread flour all at once and beat hard with a wooden spoon.

Keep beating over a medium heat for one to two minutes. The paste will come together into a ball, then begin to leave a thin film on the base and sides of the pan. That film is your signal that enough water has evaporated and the starch is fully cooked. The paste should look glossy and silky. Do not rush this stage — a wet, slack paste gives flat, sad buns.

Beat in the Eggs — and Know When to Stop

Tip the paste into a bowl and let it cool for five to ten minutes, stirring now and then. If it is too hot the eggs will scramble; if it is stone cold they will be difficult to incorporate.

Beat two large eggs with a fork, then add them to the paste in four or five additions, mixing thoroughly between each one. The mixture will look split at first — ignore that and keep going. You may need a third egg, or you may not, so watch the texture rather than a number. Lift a spoonful and let it fall: the paste should drop in a thick ribbon that settles into a soft "V" and holds a slight peak. If it pours like batter it is too loose; if it clings stubbornly to the spoon, beat in a teaspoonful of egg. A few drops of vanilla, or a spoonful of very strong coffee, are welcome here.

Pipe Even Rounds

• Line two baking trays with baking parchment and, if you like precision, draw 5cm circles on the underside, spaced 5cm apart.
• Fit a large piping bag with a 1.5cm plain nozzle, or snip the corner of a disposable bag to the right width.
• Hold the nozzle about 1cm above the paper and pipe in a fixed spot, letting the paste spread into a disc of its own accord. Stop when it reaches the drawn circle, then lift with a quick flick of the wrist.
• Smooth any peaks with a fingertip dipped in cold water — peaks catch and burn long before the rest of the bun is done.
• For a crackly top, sit a 4cm disc of frozen craquelin on each bun before baking, or simply dust lightly with icing sugar.

Bake for Crunch, Not Just Colour

Preheat the oven to 200°C (180°C fan, gas 6). Bake the buns for 15 minutes, then turn the trays and drop the temperature to 170°C (150°C fan, gas 3). Continue for a further 20–25 minutes.

Resist opening the door during the first 20 minutes; a rush of cold air will deflate them. Colour alone is not the test — you want a deep golden brown, firm sides and a shell that feels light and rigid when lifted. If you are unsure, pull one out and break it open: the inside should be dry and webbed with hollow pockets. If it is damp, return the tray for another 5 minutes. For belt-and-braces crispness, switch the oven off, prop the door ajar with a wooden spoon and leave the buns inside for 10 minutes.

Cool them on a wire rack and use them the same day for the best texture, or freeze the empty shells in a bag for up to a month and refresh them in a 150°C oven for five minutes.

Filling and Finishing

Whisk 300ml of double cream with a tablespoonful of icing sugar and a little vanilla until it holds soft-medium peaks — floppy enough to pipe, stiff enough to stand up. Over-whipped cream tastes grainy and will not fill neatly.

You can fill the buns two ways:

• Split them three-quarters of the way through with a serrated knife and spoon or pipe the cream into the gap.
• Pierce the base with a small knife and pipe cream through the hole with a star nozzle, which keeps the top pristine.

Fill as close to serving as you can. Choux softens once cream goes in, and a bun assembled two hours ahead is a different creature altogether. Dust with icing sugar, drizzle with melted dark chocolate or a little salted caramel, and serve with a proper pot of strong tea. Once you have the basic shell mastered, the variations — coffee cream, lemon curd folded through whipped cream, a spoonful of raspberry jam beneath the cream — are all yours.