If you don't see the band of white dough around the centre, you need to let the remaining doughnuts prove for a little longer before frying! Fill the centres with the orange curd, using a piping ...
While the doughnuts are cooking, mix the sugar and cinnamon in a bowl. If making the sauce, bring the orange juice and marmalade to the boil in a small saucepan. Cook for 2–3, stirring regularly ...