Preheat the oven to 200°C.
Sift the flour, baking powder, bicarbonate of soda and salt together in a large bowl.
Add the cold margarine and cut into the flour using a fork or pastry cutter until the consistency of breadcrumbs.
In a smaller bowl beat together the yogurt and 1 egg.
Add to flour mixture, stir together with a knife and finally combine to form a dough with your hands.
On a floured surface roll out to about 1.25cm / ½ “ thick.
Use a gingerbread cutter (or any shape you want) to cut out about 16 shapes.
Decorate rolls with sultana halves for the eyes.
Beat remaining egg and use to glaze with a pastry brush.
Bake in the oven for 10 – 12 minutes until risen and golden.
Cool a little on a wire rack and enjoy warm with butter and jam.