This recipe comes from Nigella Lawson's "How to Eat" and was demonstrated on her tv program, Nigella Bites." Ground almonds take the place of flour in this recipe - made sure they are finely ground or they will taste gritty. I have not yet made this, as I am posting this in respsonse to a request. Nigella adapted this recipe from several recipes, including one by Claudia Roden. It should come out very moist and syrupy. If you like, you may also sub lemons or oranges (see variation below) and also, you may pour a powdered sugar glaze over the cooled cake if you like. Nigella recommends serving this with some creme fraiche(which I might sweeten first) on top of each serving. Prep time is about 15 minutes, plus the 2 hours of simmering the Clementines.