I might be an idiot, but I think it only really works with full fat coke as the sugar does something that makes like a syrup. I know you can marinate meat it coke to make it tender and moist, might be worth trying with diet coke to see if you get the same effect
Nope, it works with Diet Coke too and is delicious!
What I did with mine, it fry chicken breast chunks, with a little frylight until almost cooked, add a sprinkle of ground ginger and then add a can of diet coke and cook on a high heat until reduced and thick. I then added stir fry veg and it was yummy!!
Can definitely recommend it...even if you are skeptical (as I was), I can recommend you give it a try...you wont be disappointed!