James Martin a delicious sponge cake with duck eggs, blackberry jam, double cream and Drambuie honeyed liqueur on James Martin’s Saturday Morning.

The ingredients are: 250g salted butter, softened, plus extra for greasing, 250g caster sugar, 4 duck eggs, beaten (can be substituted with 5 hen’s eggs) and 250g self-raising flour.

For the filling: 300g blackberries, 300g caster sugar, 15ml Drambuie Honeyed Liqueur and 300ml double cream.

To decorate: Handful of blackberries/brambles and icing sugar, to dust.

See recipes by James in his book titled: Complete Home Comforts: Over 150 delicious comfort-food classics available from Amazon now.