Place flour, salt, and butter in a food processor
Pulse for 30 seconds until bread crumb consistency
Add water thru the feeder.
Pulse another 30 to 40 seconds until almost combined
Invert on a clean workboard
Gather it all into a ball without kneading
Wrap in cling wrap and chip for at least an hour.
When chilled - roll pastry and cover a 9-inch quiche pan (as shown in the video)
Chill the pastry for 15 minutes, and
Preheat the oven at 190 C / 380 F
Dock the pastry and blind bake with baking beans for 15 minutes.
Remove the baking beans and let the crust cool.