Rachel Roddy's recipe for sponge cake with lemon custard filling | A kitchen in Rome

'Torta versata con crema translates as a "poured cake", but is best described as a cake with a baked heart of lemon custard - words as soothing as custard itself.' For his fourth birthday, I made my son an Incredible Hulk cake. His hope was for a 3D Hulk, an edible version of his favourite plastic toy. My plan was for a Hulk's head impressive enough to make up for the fact that he didn't have any limbs or muscles. Even this limited version proved too much of a challenge, however, and I ended up ...