- Measure your ingredients with a Digital scale for accuracy.
- For the choux, use high-protein-content bread flour for the best results. I am using flour with 12% protein content. Do not skip the salt, and use lightly whisked room-temperature eggs.
- For the mousseline cream, use whole milk and good quality either store-bought or homemade hazelnut praline paste.
- Feel free to substitute the hazelnut praline with hazelnut butter, but make sure to increase the sugar content for the pastry cream, as hazelnut butter contains no sugar.
- Make sure you read my Expert tips section above to maximize your success. A short recipe alone cannot cover all the necessary details and science behind baking. Consider this recipe more like an in-depth tutorial—literally, the only recipe you will ever need to make choux pastry.
- While heating the milk, water, butter, salt, and sugar mixture, ensure the sugar and salt fully dissolve. Best to start with room-temperature butter so the mixture will melt together at the same time.
- Do not skip sifting flour, as you don´t want to deal with flour lumps while making this recipe.
- Please note that you might need slightly more or less egg - and that is normal - depending on the flour you use and how much you dried the mixture while cooking it. Pay very close attention to the consistency while mixing the egg in and apply the V shape test.
- There are two chilling times involved—one fridge resting before piping and one freezing before baking. Both are important to achieve neat, crack-free results.
- Use a closed star nozzle tip so your Paris-Brest puffs up neatly. Neither a round nor an open star nozzle tip will give you the desired results.
- If you have never used a piping bag and piping nozzle before, it is worth practicing.
- I strongly advise using a digital oven thermometer to measure your exact oven temperature, as most home ovens are either over or underheating.
- While baking, do not use the fan in your oven; it can encourage cracks on your choux rings.
- When making pastry cream, use a small/medium saucepan with good heat distribution to avoid burning the milk.
- While making crème mousseline, both the pastry cream and the butter must be at room temperature. Also, make sure you don't over-whip it, as it can become runny.
