cake in a pan

I made a key lime pie yesterday and i only needed the egg yolks. I hate wasting things so i covered the egg whites and kept it in the fridge determined to find some use for it. This morning i woke up and to made pancakes or were they crepes? Usually, baking powder is added to the batter to make thick American-style pancakes while crepes are flat and made using just eggs, sugar, milk and flour. When baking, eggs can be used as a raising agent if air is beaten into it so why not when fried? I beat the egg whites with some sugar till stiff peaks formed, i whisked in some milk and then folded in a little flour. Turned out light, lovely and the best of both worlds.