If you have ever had to smell the Swedish fermented herring Surströmming, it is often hard to imagine that this is a popular 26 in Sweden. It was once voted the worst smelling food in the world. Durian fruit has nothing on this little fish – it really 27 . But a lot of people really enjoy the whole process of eating it. Here are two tips to serve and store: First, always store the tin in the fridge when unopened. Do not keep it 28 . Second, always open outdoors because the smell will 29 . Please note most airlines do not allow these tins to be 30 as they are pressurised (and can you imagine the smell?). So, don't plan to take these tins on any flights. 26