Lemon and Chocolate Cake

I had several tired-looking lemons in the fruit bowl, so I abandoned my plan to make a chocolate and orange cake and made these instead.   A kind of lemon drizzle cake with a thick layer of chocolate icing on the top.   The sharp lemon worked to balance the richness of the chocolate, it was definitely moreish. I am still knee deep in my lovely old recipe books, immersing myself in reading