Most people would think of sushi, tempura and ramen when it comes to Japanese food, but advocates of the nation's cuisine say its culinary culture has many more unique dimensions.

Now this diversity will be on display for six months when the northern Italian city of Milan hosts the Universal Exhibition from May 1 to Oct. 31.

Expo Milano 2015 is all about "food" and some 150 organizations and countries, including Japan, will exhibit their cultural ideas and technologies under the theme "Feeding the Planet, Energy for Life."