Japan is obviously the place to be if you want to eat premium sushi, so a masterclass should be high on the agenda. Sushi Mafia run a number of tours, including one which takes you around the new Toyosu fish market, where you can see huge pieces of tuna auctioned off for huge sums of money, before nipping over to Tsukiji market (which used to be where the main market was) and seeing how they prep live fish for sushi – a word of warning, it’s not for the fainthearted. Your guide will buy fish along the way and you can then head back to their HQ to learn how to make nigiri.