Rachel Allen makes a delicious looking after dinner mints chocolate cake on Rachel Allen’s Cake Diaries.

The ingredients are: 125 g dark chocolate, in drops or broken into pieces, 50 ml milk, 150 g butter, softened, plus extra for greasing, 150 g caster sugar, 3 eggs, 200 g plain flour, sifted, 2 tsp baking powder and 100 g after dinner mint, such as After Eight mints.

For the icing: 15 g mint leaves, finely chopped, 250 g icing sugar, sifted, A few drops of green food colouring, optional,100 g butter, softened, 1 tbsp lemon juice and A few drops of peppermint essence, optional.