Speculaas refer to Dutch cookies which are are sold in different shapes, but the most traditional shape would be the of a windmill. Speculaas are sold in every supermarket around Netherlands. They have an unusual taste, that comes from a combination of the multiple spices used. Dutch people have made a habit out of dipping the cookie in their coffee. Speculaas is one of the many spiced cookies eaten on St. Nicholas' Eve, December 5 in the Netherlands. Note: Sounds similar to German's Spekulatius which is a specialty during Christmas time in Germany and also made into different shapes.