Right. I've tried putting soda water into a commercial choc milk 50/50 mix. I think this would be better using the syrup as it just tastes too "thin". I added some extra choc milk to the drink and it improved. To me, it is like a spider in reverse, with the flavour in the milk instead of in the fizz. I'll give it a whirl with the syrup next time and let you know but otherwise, I think I'll stick to a spider! Interesting though.