Have a look at this link from Food 52.
It's been a while since I've seen it published or publicised for that matter. It's an old family dessert made with jelly and whipped cream. It was also very boldly referred to as mousse back in the 60s.
We also used to make it with whipped chilled tinned milk and it works very well.
Make sure not to serve this to any vegetarians however!
Here is the link to the recipe made from scratch as suggested by Amanda from Food 52 - Blackberry Fluff
