Sift the flour, sugar and salt.

Cut in shortening.

Add a little bit of milk at a time, and only enough to form in dough.

Roll dough (using floured rolling pin) to 1/4" thick.

Cut in 1/2" squares.

Pierce it with a fork in long rows from top to bottom of each piece.

Bake at 375 degrees for 15-20 minutes until done.