Brussels waffle is one of the two Belgian waffle varieties, a delicious cake enjoying the status of Belgium's national dessert. The waffle is made from a thin, yeasted batter that is baked in a specially-designed appliance, giving the waffle an unusual, checkered pattern.
The thin, runny batter helps in creating defined edges and a perfectly rectangular shape of the cake. However, the most important addition is the leavening agent, in this case, yeast, providing airiness and lightness. Although the waffle is light on the inside, it is crunchy and crispy on the outside, with an appealing golden-brown color.