| Preparation | Resting | Cooking | Start to finish | 
|---|---|---|---|
| 13 hours 15 min. | 2 hours | 40 min. | 15 hours 55 min. | 
| 1 | Put into a food-mixer bowl: ng0, 170 g egg, 40 g caster sugar, 5 g fine (or table) salt, 100 g butter, 8 g yeast and 50 g fermented viennoiserie dough (if possible). |  | 
| 2 | Knead for 15 minutes. |  | 
| 3 | Gather the dough more-or-less into a ball and cover the bowl with plastic film. Leave to rest for 1 hour at room temperature. |  | 
| 4 | Meanwhile, shape the 120 g  butter between sheets of plastic into a square about 4x4 inches (10 x 10 cm). This is the same idea as for croissants (though with less butter). You can see how to do it in this video. |  | 
| 5 | Once the butter is in the right shape, put it in the fridge. |  | 
| 6 | After the dough has rested for about an hour, "break" it: lift it and let it fall back heavily into the bowl (like knocking back a firmer dough, this releases the gas). |  | 
| 7 | Gather the dough into a ball once more, cover the bowl with the plastic film again and refrigerate overnight. |  | 
| 8 | Next day, mix 110 g granulated sugar and 10 g vanilla sugar with a whisk, then set aside. |  | 
| 9 | Roll out the brioche dough into a large rectangle. This needs to be the same width as the square of butter and twice as long. |  | 
| 10 | Place the butter in the centre of the dough and remove the plastic. |  | 
| 11 | Fold the dough over the butter to envelope it completely. |  | 
| 12 | Turn the dough through 90° (1/4 turn) and roll out. Sprinkle half the mixed sugars over the dough and press in lightly with the rolling pin so that the sugar sticks to the dough somewhat. |  | 
| 13 | Fold the ends of the dough into the centre over the sugar, then fold in half again. Give another 1/4 turn and roll out. Repeat the operation with the remaining sugar. |  | 
| 14 | Watch this video from the croissants recipe to see how to fold the dough. |  | 
| 15 | Give the dough a final 1/4 turn and roll out into a long rectangle. |  | 
| 16 | Roll the dough up from a long edge to make long roll. |  | 
| 17 | Use a brush and egg glaze to seal along the "seam". |  | 
| 18 | Cur the roll into slices about 1/2 inch (1 cm) thick. |  | 
| 19 | Arrange the slices in a spring-form tin or mould, but not too tightly, as they will swell during resting and cooking. |  | 
| 20 | glaze the tops, and the sides if possible. Leave in a warm place to rest for 1 hour. |  | 
| 21 | Preheat the oven to 390°F (200°C). Glaze the top a second time. |  | 
| 22 | Bake for 30 to 40 minutes. This must be turned out hot, before the caramel sets in the bottom of the tin. Your brioche is ready. |  | 
