1 Packet of Orange Jelly
Some boiling water about 1/4 pint
Bottle of Lilt or Diet Lilt
Melt the jelly in the 1/4 pint of boiling water.
Make up to just under a pint with the lilt.
Place in the fridge to set
It really does have a fizz when you eat it.
To make more tropical you could add pineapple chunks