What is marmalade made from? Silly me, thinking it was oranges. The QI team dip once more into the bottomless pit of ignorance and confound us with the right answers to questions we thought were settled once and for all. Whether it's history, science, sport, geography, literature, languages, medicine, classics or common wisdom, you'll be astonished to discover how hopelessly wrong you are about the things you thought you knew. Slightly off-mint.