Make the Tangzhoug - Combine Water, Milk and Flour. Whisk together till smooth and no lumps remain. Heat the tangzhoug till it thickens. You can, if you like check the temperature - it should be 65 °C.
Remove to a bowl, cover and leave to cool.
Combine Strong Bread Flour, Sugar and Yeast in a bowl. Add Milk, Eggs and Salt.
Pour in the Tangzhoug. Stir together until no lumps remain and knead to form a dough. It will be very sticky. Leave the dough to rest for 15 minutes.
Tip the dough onto your work surface or add to a bowl of a stand mixer. At this stage the dough is very sticky. To knead you will lift and smack it on the table and then fold the dough over repeatedly. I did not add flour to the bowl or surface. I did this for around 10 minutes. You can just put it in the stand mixer for 10 minutes at around speed 6. Cover the dough and leave it to rest for 10 more minutes.
Slowly add butter bit by bit into the dough, folding after each addition.
Knead again using the slap and fold method for 10 minutes or add to the bowl of your stand mixer and knead for 10 minutes at speed 6. Rest again for 5 minutes. Do the windowpane test by stretching the dough. It shouldn't tear. If it does, knead a little more and rest again.
Leave the dough to rise in a lightly oiled covered bowl for 1 hour or until doubled in size.
Shape the dough and divide into 25 buns. MIne weighed around 48g each. To do this fold in the edges, place your palm over the top and roll to form a bun shape.
Add the Camembert box (minus the cheese) to the tray or tin you are using and add the buns around it. Cover with greased cling film and leave to rise for 45 minutes to 1 hour.
Preheat oven to 220C/Gas Mark 7.
Whisk the Egg and Milk together. Glaze the buns with the egg mixture.
Add the Camambert Cheese into the box and remove the rind with a knife.
Turn the heat down to 175 C/Gas Mark 5 and bake for 12 - 15 minutes until golden brown.
Make the Garlic Butter by combinign all the ingredients for the galric butter in a small bowl and whiskign together. Brush over the hot buns.