Take the dough out of the bowl and place on a lightly floured surface. Slice the dough in half and place one half back into the bowl and cover up.
Take your half of dough and roll it into a rough rectangle about the size of a medium baking tray. Spread half of your chilled filling onto the top of the rectangle, right up to the edges.
Fold the dough over along the length of the rectangle, to form a long thin oblong with all the chocolate filling trapped inside. Slice the oblong along the width into six even strips.
Leaving a few centimetres at the top, slice a long split down the centre of each strip, making sure the two sides stay connected by the folded edge. It should look like a pair of trousers.
Take the two “legs” of the trousers and twist them outwards at least four times. You should now have two very twisty trouser legs with a sliver of chocolate filling visible through the centre of each layer.
Pull one leg upwards and tuck it under the folded “waistband” of the trousers. Pull the other leg upwards and over. You can be quite messy here, the shape isn’t super important. Just make sure the dough forms a nice tight mess of strips, with the ends of the strips tucked under.
Place the buns on a greaseproof lined tray, cover with a tea towel and prepare the other half of the dough in the same way. Once done, leave both trays to prove a second time for another 40-50 minutes. Halfway through proving, preheat the oven to 170c
Mix the egg wash ingredients together and brush it over the proved buns.
Place in the oven for 20-25 minutes or until golden brown and crisp around the edges.
While baking, put the glaze ingredients in a small saucepan and bring to a simmer over medium low heat. Simmer for around five minutes until you have a nicely thickened glaze.
Once the buns are baked, glaze immediately with a pastry brush and leave to cool for ten minutes before serving.
Serve with a good cup of coffee!