I made this to accompany some chocolate moooose for our traditional New Year's Eve party - it was very simple, and utterly delicious. Highly recommended.
it's actually better the next day, as I discovered when Pete and I scoffed the remains on 1 January :)
375g clementines, whole (skin and all)
225g sugar (I used golden caster)
250g ground almonds
1 heaped teaspoon baking powder
put the clementines in a pan, cover with cold water, and boil for two hours. Allow them to cool, then cut in half, remove any pips, then blitz in a food processor.
preheat the oven to gas 5, and butter a 20cm springform pan (I actually used a silicone one for this).
beat the eggs, add the sugar, almonds and baking powder. Mix well, and add the pulped clementines - don't beat at this stage, just stir.
pour into the prepared pan, and bake for an hour. Check after about 40 minutes and, if it's browning too fast, cover with tin foil.