You think I’m kidding? First off, it’s Japanese, which is the 21st Century’s version of Dali-esque. The entire nation seems populated by navy suit-clad, sex toy obssessed, seafood-fetishizing lunatics. Seriously, if there are sane Japanese people out there, I ain’t heard about it.
Secondly, they are made from giant, invading jellyfish.
Thirdly, they taste like it.
From Pink Tentacle:
As part of an ongoing battle against invading swarms of giant jellyfish in local waters, some residents of Fukui prefecture have developed a method for converting the jellyfish into powder, which is used to make souvenir cookies. The jellyfish treats, called “Ekura-chan saku-saku cookies,” are now on sale at JR Fukui station at a price of 580 yen for a box of 10…
The result is a cookie with a superbly textured sweetness nicely complemented by the bitter, salty flavor of jellyfish.
Simply charming. Not even in the name of research will I go near these godforsaken morsels of hellfire, not least because I know what they’re made from.

Don't keep it to yourself!