Belgian and American waffles differ in size and thickness, which means you can’t use one waffle iron to make both kinds. Belgian waffles are taller—1 to 1½ inches thick—and have deeper wells than their thinner American cousins. Traditionally, they’re also made with a different batter. As Kathleen Purvis writes in the Seattle Times, “Most Belgian waffle recipes are yeast-based, to get that crispy texture.” But you can certainly put yeast-raised batter in a regular waffle maker (as we did in our tests). Likewise, you can put regular old Bisquick, baking-powder-leavened batter, or even pancake batter in a Belgian-style waffle maker. The resulting waffles will just have a different texture and flavor than those made with yeasted Belgian-waffle batter. Any kind can be crispy, depending, as Maichel told us, on the recipe you use and how hot the waffle maker gets: “The more oil [or fat] in your recipe, the higher the temperature you cook it at, the crispier your waffle will be.”
Liège waffles, the most popular contemporary Belgian waffle variety, are rumored to have been invented during the 18th century, as well, by the chef to the prince-bishop of Liège. However, there are no German, French, Dutch, or Belgian cookbooks that contain references to them in this period – by any name – nor are there any waffle recipes that mention the Liège waffle's distinctive ingredients, brioche-based dough and pearl sugar. It is not until 1814 that Antoine Beauvilliers publishes a recipe in l'Art du Cuisiner where brioche dough is introduced as the base of the waffle and sucre cassé (crushed block sugar) is used as a garnish for the waffles, though not worked into the dough. Antonin Carême, the famous Parisian pastry chef, is the first to incorporate gros sucre into several waffle variations named in his 1822 work, Le Maitre d'Hotel Français. Then, in 1834, Leblanc publishes a complete recipe for gaufres grêlées (hail waffles), where gros sucre is mixed in. A full Gaufre de Liège recipe does not appear until 1921.
That said, quite a few users say that this waffle maker isn't as sturdily built as previous versions of the same model, and that if you don't get the top heating plate aligned just right, it can fall off -- an injury hazard if the plate is hot. The top of the G48TD also gets very hot. Some use pliers to bend the metal clips that hold the heating plates in place, which helps them line up better -- or you can just use an oven mitt to protect your hands.