In a food processor, combine the flour and butter, then pulse until the mixture looks like breadcrumbs.
If you're doing it by hand, rub the butter into the flour until it resembles crumbly texture.
Stir in the sugar and mix well.
Gradually add a small amount of water and continue to pulse or mix by hand until the dough comes together into a ball.
If the dough is too dry, add a little more water as needed.
