My mother made something very similar to this over 50 years ago. She used same ingredients. The only difference was she would pour the mixture into a clear decorative bowl but did not stir in the whipped cream. After a several hours in the fridge, the mixture set into 2 layers (dark coffee gel and a coffee mousse). She layered whipped cream on top with shaved semi sweet or bitter chocolate sprinkled on the whipped cream. It looked like such a decadent dessert, guests thought she spent hours creating the layers! So easy yet so impressive!

Could you give the recipe for your mother's version? I like the idea of the coffee jelly,