Syrup is traditionally placed between the two waffle layers of a Dutch stroopwafel.
The stroopwafel is a round Dutch cookie made by joining two thin, crisp waffle discs with a sticky syrup filling. Its name directly describes the construction: stroop means syrup and wafel means waffle. The filling is often made with a cooked mixture containing syrup, brown sugar, butter, and spices such as cinnamon.
The treat is associated with Gouda and is commonly sold in Dutch markets, bakeries, and supermarkets. The waffles are often placed over a hot drink, allowing steam to soften the syrup and make the cookie more pliable.
Modern varieties may include chocolate coatings, caramel-like fillings, or different flavorings. Those innovations do not replace the defining traditional element. Custard, jam, and chocolate are possible fillings in other pastries, but the classic stroopwafel is specifically joined with syrup.