It is possible to use frozen raspberries.
Make sure the gelatine is fully rehydrated in cold water before using it.
Don’t add the soaked gelatine the a boiling liquid since it will lose its setting capacity. Gelatine will set when its temperature falls below 25°C.
Allow the charlotte at least 8 hours to fully set.
Stir through the peach filling some diced peaches for extra texture.
The name
charlotte russe refers to a pudding that has been set with gelatine in a mould and that is decorated with sponge fingers all around when unmoulded.