blancmange has a setting agent in this case gelatine.
mousse relies on fluffy egg whites I think?
(which, as I have never made either form scratch is pure guess work)
love love love a good blancmange.
Can't bear Angel Delight, tastes of fluffy chemicals.
Ruby and Briony should both have gone. Karen saved herself at the last minute.
Can't bear Kim-Joy, but her turtles were awesome, we all gasped as the shell collapsed. Brilliant