Preparation Time: 15 minutes
Cooking Time: 15 minutes

1. Preheat the oven to 200° C (400° F). Grease a baking sheet.
2. Rub together the flour, salt, baking powder, sugar and butter until crumbly. Add 1/2 cup /50g grated cheese and 1/2 tsp dry mustard powder. Add the milk.
3. Turn the mixture on to a floured board and knead very lightly until you obtain workable dough.
4. Roll the dough out to a thickness of 2 cm (3/4"). Using a 7.5 cm (3") cutter, cut the dough into discs.
5. Place on the baking tray and brush with the beaten egg and milk mixture.
6. Sprinkle the scones with 1/2 cup/50g more grated cheese.
7. Bake for 15 minutes or until golden and well risen.
8. Remove from the oven and carefully transfer to a rack to cool. Serve hot or cold, with butter.