Like the carrot in a carrot cake, beetroot keeps the cake moist and helps it to last for days — as if any chocolate cake is going to last for days.

Ingredients
Feeds 6. Takes 1 hour plus cooling.

50g bitter cocoa powder
180g plain flour
1½tsp baking powder
Pinch of salt
250g caster sugar
300g cooked fresh beetroot
3 eggs
200ml corn oil
1tsp vanilla extract

Heat the oven to 180C/Gas mark 4. Butter and flour an 18cm (7in) round or square cake tin.

Sift the cocoa powder, flour, baking powder and salt into a bowl. Mix in the sugar and set aside.

Purée the beetroot in a food processor. Add the eggs, one at a time, then add the corn oil and vanilla and beat until smooth.

Make a well in the centre of the dry ingredients and pour the beetroot mixture into the well. Lightly mix, using a rubber spatula, and pour into the prepared cake tin.

Bake for 40 minutes, or until an inserted skewer comes out clean. It won’t rise a great deal and the top may crack a bit. Allow to cool a little before removing from the tin, then leave to cool completely on a wire rack. To serve, dust the cake with icing sugar or bitter cocoa powder, and cut into generous slices.

Times Recommends

• Britain's Top 20 seaside fish and chip shops
• Ice cream makers: the scoop of the century
• British berries make super sorbets