We're having friends round for dinner on Saturday and one of them is intolerant to gluten and dairy. We've got the rest of the menu together (smoked haddock and cauliflower soup followed by duck tagine which he can have with rice and the rest of us will have cous cous) but I'm really struggling on pudding. Any suggestions - I'm presuming it needs to be something primarily based around fruit but I'd like to make it a bit more interesting.