Abernethy Biscuits (Scotland)

1 cup flour
1/2 cup butter
3 tablespoons granulated sugar
1 teaspoon cream of tartar
1/2 teaspoon baking soda
1 tablespoon milk
Pinch of salt

Sift flour, salt, baking soda and cream of tartar together. Rub in butter until mixture looks like bread crumbs.

Dissolve sugar in milk; stir into flour/butter mixture. Form into stiff dough. Roll out to a thickness of 1/4 inch. Cut into squares; prick all over. Bake at 350 degrees F for 20 minutes.

Yields about 10 biscuits.