Susan's Scones

That's pronounced half-way between "scun" and "scahn"! Easier to eat than say, but whatever you do don't call them biscuits! (If you value your life, that is.)

3 cp self-raising flour
1 pinch salt
1 T castor sugar (very fine granulated sugar, here's a great link to explain)
25 g butter
310 ml (1 1/3 cp) buttermilk
currants or cheese