Cut the Butter into cubes.
In a bowl, measure the flour, add a pinch of salt, and add the cubed cold butter; then, using your fingers, rub the flour and butter together until they blend and resemble breadcrumbs. Add cold water a tablespoon at a time until the dough comes together. You may need less water or a touch more.
Turn out the dough onto a lightly floured countertop and knead briefly until smooth. The goal is to bring the dough together, not knead it like bread. Wrap in parchment paper or cling film and chill in the fridge for at least 30 minutes.
Preheat oven to 160ºC (fan-assisted)
Remove the dough from the fridge and allow it to rest for five minutes. Then, on a floured surface, roll out the dough to a 3mm thickness and use it to line the tart tin. Press it into the bottom and sides. Trim the excess off. Keep a little uncooked pastry back, just in case you need to patch any cracks later.
Line the pastry with parchment paper, then fill with baking balls, beans, or uncooked rice. Ensure the base is evenly covered.
Blind-bake the tart for 15 minutes, then remove the parchment paper and baking balls, and return to the oven for about 5-8 minutes, or until it looks dry and faintly coloured.
If you need to repair any cracks or holes, use the reserved pastry to do so and set it aside.