In the work bowl of a food processor, pulse together flour, salt, and sugar. Add cold butter, and pulse until mixture is crumbly. With processor running, gradually add water, 1 tablespoon at a time, just until dough comes together. Turn out dough onto a lightly floured surface, and shape into a disk. Wrap in plastic wrap, and refrigerate for at least 30 minutes.
Recipe by Taste of the South at https://tasteofthesouthmagazine.com/hummingbird-pie/