Not "The Onion". The original capitalization is "the Onion Problem", i.e. the problem of dicing onions into even pieces.
[1] https://theonion.com/kenji-lopez-alt-returns-from-beef-dimen...
ontopic edit: I am interested in an optimal onion cutting technique, while I'm happy with mine, the upside-down banana teaches that there's always a few ways to approach and learn something.