Clementinen Kuchen Nigella. Thinly sliced clementine oranges nestle into brown sugar and butter, topped with a buttermilk cake that has clementine zest and juice poured over top and baked until perfect. Put the clementines in a pot with cold water to cover, bring to the boil, and cook for 2 hours.

Nigella's clementine cake (from how to eat) uses clementines that have been boiled for 2 hours, until very soft. Mix the clementine paste, sugar, and brown sugar together until smooth. Put the clementines in a pot with cold water to cover, bring to the boil, and cook for 2 hours.