For the Dough: Whisk flour, sugar, and salt together in a medium bowl. Cut butter into cubes no smaller than 1/2 inch, and toss with flour mixture to break up the items. Together with your fingertips, smash each cube flat-that's it! No rubbing or chopping. Stir in water, then knead dough against sides of the bowl until it comes together in a shaggy ball. Dough temperature ought to register between 65 and 70°F (18 and 21°C)