Melt together the syrup, sugar and butter, let cool a bit, then stir in the eggs and spices, and then the bicarbonate and flour. This will make a loose dough. Cover with clingfilm and refrigerate at least overnight. After that it will be easy to bake.When baking, roll out a little at a time, use cookie cutters for the shapes you want, and bake in 200 degrees centigrade for a few minutes. The cookies might be soft straight from the oven, but "stiffen" as they cool.