[jakhvnen] cube rule of sushi

Twitter user Phosphatide popularized the cube rule of food identification.

the cube rule identifies food with starch forming a tube around a filling as "sushi", but Phosphatide appears to be Japanese (based on the language of his or her tweets).  together, this is curious because sushi with rice on the outside is rare in Japan.  (the inside-out style was supposedly invented to appease Americans who are weirded out by the sight of seaweed (nori), so it was hidden inside the roll.  Japanese are not weirded out by seaweed.  seaweed, whether on the inside or the outside, is an essential structural component of maki-sushi.)

the explanation for this curiosity is that Phosphatide was only the illustrator.  the original description of the rule was text or speech by "Brandon".  Brandon is presumably American, and Phosphatide was presumably familiar enough with American-style sushi to illustrate it (as a cube).

alternatively, it could be argued that the rice on the outside of American-style sushi is not structural starch, and perhaps Phosphatide had in mind traditional sushi with nori as its structural starch on the outside.  nori is probably mostly composed of some carbohydrate polymer, arguably starch.  the rice on the inside of traditional sushi is like the french fries in a french fry sandwich (chip butty).

given this, American-style sushi, which presumably Brandon had in mind when inventing the label "sushi", is a salad.  two wrongs made a right: Brandon thought the rice on the outside was structural; Phosphatide thought Brandon was referring to nori as the starch on the outside.