I was idly re-reading George Orwell's essay 'The Moon Under Water' and came across the reference to "those large biscuits with caraway seeds in them which only seem to exist in public-houses". I have no idea what these are. Were they common in pubs? Or in the contrary, so rare that a pub might be the only place where you might have a chance of finding them, if you were lucky? A London speciality, or something found throughout England? So many questions ...