Other egg substitutes that are actually egg-free are bananas, flaxseed gloop and applesauce as well as commercial egg replacers.
This is easy to make and worked great in a baking recipe I made. I see no advantage to buying a dozen eggs and separating them to make this (what do you do with the yolks?). But when I have something that calls for yolks only, instead of putting the whites in a bowl in the fridge and forgetting about them until time to toss them, I will make this to use in baking. Made for Fall 2011 PAC game.
I used your recipe for the whole egg in the clone biscuit mix #47201 I used to make pan-cakes. It worked really nice.
I made half a recipe, minus the food coloring, worked great, thanks!