Add 200g all-purpose flour, 1 tsp dried active yeast, 1 egg, 2 tsp salt, 15 g sugar, 50ml water and 80ml semi-skimmed milk into a mixing bowl and mix thoroughly using hand until a dough begins to form.
Transfer the dough onto a lightly floured surface and begins the hand-kneading process for 10 minutes until the dough gets more elastic and less sticky.
Then, add 20g unsalted butter to the dough and continues kneading for 10 minutes until the dough is smooth and silky. (Hand kneading refers to - fold the dough, pull it apart, put it back together, bang it against the surface and repeat the whole process again.
Place your dough back into a mixing bowl and set aside for proofing purposes for 1 hour for it to rise.
After 1 hour, transfer the dough onto your work surface and punch it down to remove gas bubbles formed by the yeast.
Then, divide the dough into 12 portions and smoothen each one into a round shape.
Let it rise for another 15 minutes.
Press the dough to release an additional gas bubble, wrap 5g of salted butter in the dough and repeat for 6 dough balls.
Repeat the same process for the remaining 6 doughs, but wrap it up with 5g of dark chocolate.