1. Which of the following is made with dried fish bladders: a) sushi, b) cod liver oil, or c) real ale?
2. Which of these can be found in fire extinguishers: a) diamond shards, b) avocado skins, or c) cow hooves?
3. Which substance is used to produce high-end perfumes? a) egg shells, b) metal filings or c) undigested squid beaks vomited up by whales?