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Definition of waffle. : a crisp cake of batter baked in a waffle iron.
The Brussels waffle is characterized by the dough, which uses yeast, eggs, and melted butter. As a result of the yeast and eggs, the dough is light and fluffy, rather than dense like other Belgian waffles.A Brussels waffle is also made in a deep waffle iron which makes large divots in the finished waffle.n actuality, the waffle which many Americans call a âBelgian waffleâ is a âBrussels waffle.â They were referred to as Belgian waffles at the 1964 World's Fair, when a Belgian man introduced the concept to the United States.