Mill soft white wheat berries on the lowest setting of your grain mill to yield 325 g fresh milled flour.
Add flour, sugar, and salt to the food processor. Pulse to combine.
Add cold (or frozen), cubed butter and pulse until the mixture looks crumbly with small pieces of butter throughout.
With the processor running, drizzle in cold water just until the dough begins to come together. Do not overmix.
Divide into two disks, wrap, and refrigerate for at least 1 hour.
Roll on a lightly floured surface and use as directed.