Combine flour, sugar, and salt in a mixing bowl or food processor.

Cut or pulse in butter until the mixture resembles coarse crumbs.

Gradually add milk, mixing with a spoon or pulsing until a stiff dough forms.

If needed, add an extra tablespoon of milk.

On a lightly floured board, roll out the dough as thinly as possible.

Cut the dough into strips approximately 2"x3".

Punch numerous small holes in each strip.

Bake at 300°F (150°C) on a lightly greased baking sheet until lightly browned, about 10 minutes.

Cool on a wire rack.

Store at room temperature in an airtight container for up to 5-7 days.