In a large bowl, whisk flour, sugar, and salt.
Add butter and toss to coat in flour.
Using your hands, work butter into flour mixture until walnut-sized pieces form.
Add ice water and stir and squeeze with your hands to form a dough.
Add more water, 1 tablespoon at a time as needed, until dough holds together; it shouldn’t feel sticky but will easily hold together when squeezed.
Form dough into a disc and tightly wrap in plastic wrap.
Refrigerate until well chilled, at least 2 hours or up to 3 days.
