After the dough is ready, take it out of the fridge and press out any air. Cut into four equal sections.
Take one section of dough and roll it out into a flat rectangle shape. Add some of the chocolate fillings and spread them out. Avoid spreading the chocolate to the longest side of the rectangle.
Using a pastry brush, lightly brush water on the bare section.
Begin to roll the brioche dough into a log, starting from the blank side. Cut the log in half.
Take the log and cut it half lengthwise, leaving a section uncut at the top and holding the log together. Braid the cut sides by twisting one over the other.
Pull the dough into a circle and tie it into a knot with the bottom layer folding over the top and ending in the center. Pinch to seal.
Place the prepared chocolate brioche onto parchment paper. Repeat until you have used all the dough and chocolate. Cover the prepared brioche with a dish towel and allow to rise for at least another 1-2 hours.
When they have finished rising for the last time, brush with egg wash. Place in an air fryer not touching. Depending on your air fryer basket size, this can mean 2-4 brioche rolls at a time. Do not overcrowd.
Air fry at 300 F, air fryer setting, for 15-18 minutes.
Allow to cool and serve!