Real Scottish Shortbread Recipe

all ingredients into large deep bowl. Knead together with hands until dough loses its stickiness, then keep kneading just until dough starts to become sticky again (about 10 to 15 minutes all together). Chill dough in fridge for 2 hours. Roll dough into balls (about the size of a walnut). Place cookies on ungreased cookie sheet. Press tops with a floured fork. Bake at 325° for about 8 to 10 minutes (set but not brown on top). Let cool. Store sealed in fridge to maintain freshness.