Rub the flour, salt and the grated butter until a breadcrumb texture is achieved.
Add the egg yolk and water and mix until a soft dough is formed.
Knead the dough for a further minute. Now wrap it in cling film and chill for at least 30 minutes.
Take the pastry and roll out to around a 3mm thickness. Use this to line your quiche mould
Leave a little over hang of pastry on the edges of the quiche mould. Place baking beans (or rice can be used instead), into parchment paper on top of the pastry.
Now bake this at 175°C for 15 minutes.
Remove the pastry case from the oven. Take away the beans and parchment paper. Now brush the pastry with yolk and bake for a further 5 minutes. This will help to seal the pastry. Allow the pastry to cool.