Pour the clementine juice into a pan on a high heat to warm through – don’t let it boil. Add a little sugar to sweeten – not too much, you still want that zippy clementine flavour.
Grate in a tiny bit of ginger, then grate a bit more onto a chopping board then squeeze it over the pan of juice so you get a few drips of ginger juice in there. Take the juice off the heat. Sprinkle gelatine over the juice, then whisk in quickly.
Arrange 6 small serving glasses on a tray and put 2 clementine rounds in each. Sieve the juice mix into each glass, allow to cool, then refrigerate for about 3 hours, or until set.
To serve, mix the vanilla syrup into the yoghurt and dollop a spoonful on top of each jelly, then grate or shave a few pretty bits of chocolate on top. Note: The amount of gelatine you’ll need will vary depending according to the type, so check packet instructions and adjust accordingly. Buy vanilla syrup at good supermarkets and delis.