Place the yeast and milk in a bowl and allow to dissolve for 3 minutes.
Once bubbling, add the flour, sugar and lemon zest and beat on low until the mixture resembles a shaggy mixture.
Add one egg in and combine on low until fully combined, repeat with each egg until you have a dough formed.
On a low setting with your mixer, add in 1-2 cubes of butter and incorporate until you cannot see any butter remnants in your dough.
Repeat by adding the butter and mixing until it is fully incorporated into your dough.
Beat for a further 5 minutes until the dough it looks slightly glossy and is pulling away at the sides of your bowl.
Lightly butter a bowl and place the dough therein, placing in the fridge to rise until doubled in size, approximately 1 hour.
Remove from the fridge, lift and allow the dough to fully deflate.
Return to the fridge and repeat to allow to rise until doubled in size.
Cover the bowl and refrigerate for several hours or preferably overnight.
The next morning, remove from the refrigerator and lightly grease your baking tin.
Roll your dough out to an equal rectangle and ¼ inch thickness.