Jelly is a chilled dessert known in the
USA as
jello, but famous throughout current and former
British territories as jelly.
Jelly is simply finely granulated sugar, gelatin, food acid, colours and flavourings (such as raspberry, this nodist's favourite).
Jelly in Australia used to mean Aeroplane Jelly, probably one of the most famous of all Aussie foods, but since Aeroplane's (and Cottee's) acquisition by non-Australian global food conglomerates, Dick Smith Foods' Helicopter Jelly is now the national standard bearer.