1. Pre-heat the oven to 220° Celsius (450° Fahrenheit).2. Put the flour, sugar, salt in a processor and mix.
3. Add the butter and work again until the mixture resembles fine bread crumbs.
4. Add the milk in a thin stream through the feeder tube, stopping as soon as the dough forms a ball. It should be moist but not sticking to the sides. If it is too dry, simply add some more milk; if too wet, add a little more flour.
5. Turn out onto a heavily floured surface, form into a ball and than gently press into a 2 cm thick round.
6. Cut out and brush with the glaze.
7. Bake for 12 - 14 minutes and cool slightly on a rack.