Set out three medium mixing bowls.
Add the egg whites to one bowl, yolks to another.
Add the beer, milk, melted butter, maple syrup, and vanilla to the yolks, beat until well combined, light and fluffy.
In the third bowl (make sure this is the largest bowl, all ingredients will end up in this bowl) stir together the flour, cornstarch, baking powder, baking soda, salt, bacon, and ¼ cup sugar.
Beat the egg whites until stiff peaks form, beat in the remaining 2 tablespoons sugar.
Make a well in the dry ingredients, add the yolk mixture, stir until well combined.
Gently fold in the egg whites. Cook in your waffle iron according to manufactures specifications (make sure to use cooking spray or melted butter if indicated).