Preheat the oven to 190 degrees C. Sift the ﬂour, bicarb soda, salt, ginger and spice into a bowl. Stir in the rice flour, rub in the butter and mix in the sugar. Warm the syrup and stir it in, then knead lightly in the bowl to form a smooth dough. Shape the dough into walnut-size balls and space well apart on greased baking trays.
Bake each batch for 10–12 minutes or until they are golden. Cool on the baking trays for 5 minutes, then transfer to a wire rack to cool completely.