h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

In Japan the traditional morning meal always includes rice and is most likely to include fish - especially a nice bit of broiled salmon- salty miso (salty soybean paste)soup and natto.
Natto is fermented soybeans - it smells like century-old gym socks, looks like it has been fermented inside a dog which has then vomited it up and has the texture of last month's baked beans with a semisolid slime that sort of binds the individual beans together into a sticky mass.
It is considered a standard question here to determine how culturally acclimatized gaijin (non-japanese) have become.
There is a sort of sliding scale of questions that start with "can you use chopsticks?" and moves on to "can　you eat sushi?" "can you speak japanese?" "can you read kanji" and finally "do you like natto?"
It is Japan what vegemite is to Australia and grits are to the southern U.S.