Grease a baking sheet. Sift together
the flour, bicarbonate of soda and salt.
Make a central well and add the butter
or margarine and buttermilk. Working from the centre, stir to combine
the ingredients until a soft dough is formed.
With floured hands, gather the dough
into a ball. Knead for 3 minutes. Shape the dough into a large round.
Place on the baking sheet. Cut a cross
in the top with a sharp knife and dust with the flour.