In Europe, a Belgian waffle is an entirely different matter, a subtle yet complex creation that holds its own against the world's most famous pastries: croissants, brioche, and so forth. Like its French counterparts, these waffles, Gaufres de Liege, use an unnaturally delicious amount of butter. They can be found on the streets and outdoor markets in Belgian cities, where vendors cook them on the spot for you.
In addition to the butter, Gaufres de Liege are distinguished by their yeasted batter as well as a healthy dose of large sugar crystals called pearl sugar. As the waffles cook in the iron, the sugar crystals melt and caramelize on the surface, contributing to the bite of the exterior.