"South Australian law on single-use plastic packaging coming into force on 1 September will ban polyethylene containers known as shoyu-tai in Japan"
https://www.theguardian.com/australia-news/2025/aug/31/south-australia-bans-soy-sauce-fish-packets-in-world-first-to-cut-single-use-plastics
🔸Haven't seen them for a while, but thought they were called "Luncharm" (ランチャーム), an abbreviation of "make your lunch charming"[1, 2].
Don't usually need extra soy sauce in an ekiben[3], so for me they tend to be a distraction.

1. https://www.asahi-so.co.jp/lunch/
2. https://www.benbrowton.com/post/luncharm
3. https://en.wikipedia.org/wiki/Ekiben
#luncharm #ekiben