Pate Brisee ...

... a bit more detail for Lee.
1 3/4 cups all-purpose flour
2/3 cup unsalted butter, cut into small pieces and softened
1 teaspoon salt
Pinch of superfine sugar
1 large egg
1 tablespoon cold milk
Pop the flour, salt, and sugar in the bowl, stir then and the softened butter and rub into the flour mix until it resembles fine bread crumbs.
Mix the egg and COLD milk and slowly add to the flour mix while stirring until it comes together.
Tip out onto a lightly floured surface and bring together to form a ball. Do not over knead.
Flatten the ball and wrap in plastic, pop in the fridge for at least 1 hour before rolling out to fit your pie/tart pan.