xmwx,
I think "jelly" in the UK is JELLO or gelatine dessert in the U.S.
It's not a good everyday food becasue it is filled with artificial colors and flavors which have historically been show to be carcinogenic and then they move to a different formulation.
The aspartame is the least of the nutritional problems.
For the occasional diet aid it is a tasty, non-caloric morsel; I eat it when I get strict about my calorie intake and declare war on REAL desserts.