This is a European version of the snickerdoodle. This cookie has the softest dough and makes a bakery-style cookie that will impress you. (Recipe from Chef Express: Home Baking translated cookbook) Tip: You can make caster sugar by putting granulated sugar in your blender and pulse for about 1-2 minutes. The sugar should be reduced to half. It doesn't take long.. be careful not to turn it into sugar powder. However, most supermarkets do carry 10X sugar aka SuperFine sugar.