Place the milk in a small jug or bowl, then stir in the yeast and a spoonful of the sugar. Leave for 5 minutes, until frothy
In the bowl of a stand mixer, combine the flour, cocoa, spices and salt
Make a well in the centre, then add the yeast mixture, egg, melted butter and remaining sugar
Using a dough hook, mix on low-medium for 5 minutes, until smooth. Mixture will be quite sticky!
Add the chocolate chips and stir mix through on low
Transfer dough to a large, clean and oiled bowl. Cover with plastic wrap, then a tea towel and leave in a warm place until doubled in size (1½-2 hours)
Turn dough onto a floured work surface and divide the dough into 3 equal parts. Cut each third into 5 pieces and roll each into a ball
Place the buns into a lined 23cmx34cm deep cake pan, leaving an equal distance between each bun
Cover again and place in a warm spot to rise -about another 45 minutes
While dough is rising, preheat the oven to 200° celsius