What's the best choice of cake for a children's birthday party? It's going to be a 2 tier round cake and I was thinking perhaps a madeira cake for strength? The other options would be a vanilla sponge or chocolate cake, but DS isn't so keen on chocolate. It will be covered by sugar paste and my very best likeness of Captain Barnacles et al.
Also, what kind of filling? I usually go for a vanilla buttercream, but would some jam go down well in addition to that?
All advice would be very welcome!