In a medium bowl whisk flour with sugar and salt.
Incorporate butter using a pastry blender, a fork or a pastry processor, until crumbs are formed.
Add egg yolk, almond extract and water.
Stir until incorporated.
Wrap the dough in plastic wrap, shape into a rectangle and refrigerate for 1 hour.
On a lightly floured surface roll the dough to a 8×16 in (20x40cm) rectangle.
Line a 5×14 in (12X36cm) tart pan with the rolled dough and press the edges. Trim the excess dough.
Prick the shell with a fork and refrigerate for 30 minutes.
Preheat oven to 350F (180C).
Line the shell with parchment paper and fill with pie weights or beans. Bake for 20 minutes.
Remove the parchment paper and weights and bake for 10 minutes more.
Let it cool slightly on a cooling rack.