I just got a somewhat-bizarre phone call about how best to mix jelly and vodka. A spot of quick googling later (yes, take that, I just used it as a verb without respecting your trademark, punks) yielded this inebriation-friendly post from the BBC’s website:
The idea of vodkajelly is a simple one: get drunk as quickly as you can, by eating a food most commonly found at young children’s birthday parties.
The basic recipe is just that — very basic. Make up a packet of jelly, using between a quarter and half of the amount of water suggested. Top up with as much vodka as you like (or can handle).
Trust the Brits ;-)
Sounds worth trying sometime, though… probably not something to leave in a family-friendly fridge, and probably not with that sort of ratio… ½ Vodka jelly might be a bit much for those of us who would prefer not to get totally sloshed whilst eating dessert.

I’ve had vodka jelly… its pretty darn good, i’m not 100% sure what our ratio was as marcus mixed it for us but it was good, the only down side was he did it in shot glasses, and that doesn’t work so well, your better off to use a bowl.
Why would you use any water?
Why would you use any water?
So that one can consume more vodka jelly before passing out!