am all set to do the Nigella black cake today (thanks for recipe on other thread Crunchie ) but just realised I don't know whether it should be a round or square 23cm tin.
Can anyone with the recipe book take a quick gander and tell me....
(would prefer square as it'd be easier to cut, but have a round tin - don't know whether it makes a difference but assume it does as the volume is surely different depending on shape)