Remove the dough from the fridge and pull it from the bowl, onto a clean bench. Split it into two equal portions.
Line two 450g (1lb)loaf tins.
On a lightly floured bench, stretch out one piece of dough into a rectangle. Fold the top 1/3 down to the middle, then fold the bottom 1/3 up, like a pamphlet.
Turn the dough 90 degrees and gently flatten it out a bit, then repeat the folding process. (See the pictures in the post for details.)
This makes a little log. Roll it out to extend it a bit then place it in a lined loaf tin. Repeat with the remaining dough piece.
Leave the dough to proof until it has doubled. This can take between 4-6 hours depending on the warmth of your room.
After the dough has risen, heat the oven to 200 °C fan-bake (220°C regular oven).
Brush the tops of the loaves with milk.
Bake the loaves for around 35 minutes until deep golden brown. When the loaves are removed from the tins they should feel light and sound hollow when the bottom is tapped.
Leave the leaves to cool for an hour before slicing.