In a large stainless steel bowl, combine the flour, light brown sugar, baking powder, cornstarch, salt, and cinnamon. Set aside. Peel the bananas. Smash them to a rough-textured consistency in a stainless steel bowl using a slotted spoon (they should yield about 1 cup). In another stainless steel bowl whisk together the beer, egg, and lemon juice. Pour the this mixture over the bananas, and use the slotted spoon to combine thoroughly. Continued >>>