Outstanding among the main dish offerings is the quintessentially New Nordic smoked cod roe with pickled vegetables.

BBC: Copenhagen��s gritty gastronomic quarter

The city is also home to food theme parks such as Gyoza Stadium and Ice Cream World, vending machines filled with canned coffee drinks, and probably more food fads than anywhere else in the world (today its pancakes, tomorrow it might be cod roe).

BBC: Living in: Cities with great food

Spaghetti, which the Japanese love to eat with seaweed and cod's roe, has risen by over a quarter in the past year, and at the end of April hoarders cleared the nation's supermarket shelves of butter.

ECONOMIST: Bank of Japan