In a food processor, pulse the flour, butter, sugar, and salt until the mixture resembles coarse meal, with a few pea-size clumps of butter remaining.
Add 2 tablespoons of the water. Pulse until the mixture just holds together when squeezed. (Add more water as necessary; do not overprocess.)
Place the mixture on a sheet of plastic wrap. Shape it into a 1-inch-thick disk, wrap tightly, and chill until firm, at least 1 hour and up to 3 days.