Yudan mix: Put a tablespoon of flour into the pot, add 70 ml of water, and mix well. Gently cook, this will make the bread soft. Use medium heat, slowly become a paste, cook it like this, turn off the fire then pour it in a bowl. Let it cool. Cover with plastic wrap to prevent the surface from becoming hard.
Make topping: In a large bowl, mix flour, sugar, baking powder. Add in egg yolk, butter, and rub it with your hands. Gradually add milk. Wrap the dough with cling film & rest in fridge.
For the dough: add flour, milk powder, custard powder, salt, yudane. Place the yeast on the the other side of the bowl. Add water. Mix until combined then slowly add the butter. Knead the dough until smoothly. Cover with a clean clamp towel and let it double in size.
Sprinkle some flour on working surface. Roll the dough a cylindrical form then divide into 8 equal portions (67g for each). Round the balls. Prepare a lined baking tray. Spray sone water. Cover & let them double in size.
Take the dough from the fridge, divide into 8 portions. Place on top of cling film, flatten the dough then cover the top. Roll out evenly, big enough to cover the dough
Place the crust dough on the top of the buns. Gently brush some egg wash.
Preheat the oven at 200oC before 10 minutes. Bake 15 minutes until golden brown. Best served with a slab of butter.
