Secret ingredients

Leak got very excited this week, for we thought we were on the verge of discovering one of the greatest secrets of modern cuisine — more famous than KFC’s 11 herbs and spices, more fortifying than Irn Bru’s girders. Yes, we thought we were about to discover the secret ingredient in Iceland’s famous brew Brennivín that makes it the only suitable chaser to such Icelandic treats as preserved goat's testicle.