This is adapted from a brilliant recipe devised by Liza, the pastry chef at The Ivy. We used to make it for vegan guests celebrating birthdays in the private dining room, and it was always a popular choice. Often vegan cakes can be disappointing, either crumbly and dry, or flavourless – this cake is neither of those things, and most people I make it for don’t even realise it’s vegan. I tend to serve it plain, as a teatime cake, but if you wanted to dress it up, simply whip