The device known as shoyu-tai (or soy-sauce snapper in Japanese) was invented in 1954 by Teruo Watanabe, the founder of Osaka-based company Asahi Sogyo, according to a report from Japan’s Radio Kansai.
It was then common for glass and ceramic containers to be used but the advent of cheap industrial plastics allowed the creation of a small polyethylene container in the shape of a fish, officially named the “Lunch Charm”.
The invention quickly spread around Japan and eventually worldwide, and it is estimated that billions have been produced.
Tbh there’s your answer, fix that. Buy some damn soy sauce, they sell it at the most basic stores.
But that doesn’t solve the issue for people eating it at a third location, like work, their car, or an unprepared friend’s house, can’t buy bottles of soy for literally everywhere you go “just in case” and such.
Maybe we still need them for that, but we can also be mindful of our circumstances and prepare/choose appropriately. Would require people to change personally however, so keep waiting lol.
Hell maybe we just make it common for them to sell little 4oz resealable glass bottles of kikkoman at the Chinese spot, then one can still be unprepared and still get the sauce there (though it’d be cheaper if they prepare next time), and whatever sauce isn’t used is retainable. Still not perfect since those bottles have plastic tops, but it’s something! Maybe make the caps out of hemp plastic for added bonus?