This is also nice with leftover seville oranges, if you have any, and would probably work with marmalde too (if you thinned it down a bit) In fact, its such a basic cake, it probably works with anything a bit tangy!

I have also replaced the lemon with 25g of cocoa and 100g of melted chocolate and drizzled it with coffe leuqueur instead. Reduce the cooking time a bit for this version, as it\'s much nicer if its very moist and a just a bit squidgy.