What is "ontbijtkoek"

An ontbijtkoek (literally translated breakfast cookie) or peperkoek (pepper cookie) is a Dutch spiced cake. Rye is its most important ingredient, coloring the cake in light brown. It is often spiced with cloves, cinnamon, ginger, succade and nutmeg. Several parts of the Netherlands have their own local recipe, of which the most famous is "Oudewijvenkoek" (old wives' cake) which is mostly eaten in the northern regions, and is flavored with aniseed. Ontbijtkoek is traditionally served at breakfast with a thick layer of butter on top, as a replacement for bread. However, due to its sweet taste it is also served as a snack.