Apparenty the Coke is quite good for cooking. Probably just because of all the sugar; it's amazing how much goes into the tastiest recipes.
Irrelevant Coke story - my wife's great-uncle brought a Nazi coin with him when he was freed from one of the Polish concentration camps and emigrated to the States, and it ended up in the wife's coin collection. The thing was absolutely filthy, so we decided to leave it in a Coke solution overnight, and the thing had completely disappeared by the morning
I do realise that the numismatists among us have just fainted BTW