Preheat the oven to 160°C/140°C fan/Gas 3. Line two baking sheets with non-stick baking paper.
Measure the butter and golden syrup into a saucepan. Heat gently, stirring, until melted.
Place the flour, ground ginger, chopped ginger, bicarb and demerara and muscovado sugars in a mixing bowl. Mix well, then stir in the melted ingredients. Add the egg and bring the mixture together to form a dough.
Divide into 16 equal pieces and roll with your hands into small balls. Place on the baking sheets and slightly flatten to about 1cm (½in) thick.
Bake for about 25 minutes, until golden and firm around the edges.
Leave to firm up on the baking sheets for a few minutes, then transfer to a wire rack to cool completely.
