To make the spotted dick sponge, combine flour, baking powder, shredded suet, sugar, currants and lemon zest in a large bowl and stir.

Add the milk and mix well to create a soft dough.

Grease a pudding basin with oil or butter and transfer the dough into it, covering with a folded piece of greaseproof paper.

Using ties, secure the ends of the greaseproof paper and place a damp dish cloth over the top. Tie the end of the dish cloth so that everything is secure.

Place the pudding basin into a large saucepan and fill 2/3 of the way with water, cover and bring to the boil. Reduce to a simmer for one hour. This will allow the pudding to steam and create the right texture.

To make the custard, bring milk and cream to a simmer in a saucepan.

Whisk together egg yolks and sugar in a bowl until light and frothy.

Pour the hot milk mixture onto the eggs, bit by bit, stirring well to combine with each addition. Transfer the combined mixture back into the saucepan and cook over a low heat, stirring occasionally until thickened.

Once ready to serve, slice a wedge of the spotted dick and drizzle with the warm custard.