Taipei

Seems maybe coming soon per this link to Taiwan airports (no mentioned of airlines) :
https://www.taiwannews.com.tw/en/news/3834203

Maybe popular on Japanese routes in Y class, would others like this?

Virginia Emery

Pork Chop boxes are to die for, wish this was an option on J pre-order

Popularity has nothing to do with Japanese routes

coolfish1103

Health and safety concerns could well make this not a viable choice (or severely downgraded) for airline meals.

Taipei

.For Japanese this type of meal is quite common so it may well work on Japanese routes better than other routes.. On Domestic flights they are sold airside shops(like at the rail stations but normally less choices at the airport normally, CTS seems the outlier with lots of takeaway options) and people eat them on the airplane and ANA/JAL offers this on longer flights (not free) such as HND-OKA.

JAL calls their

Virginia Emery

Again, Taiwanese Rail 便當 has very little to do with Japanese, the lack of separated items in a lacquered box would probably drive the Japanese nuts

Partially collapsed wood/bamboo (?) box held together by a rubber band is what I recall..

Taipei

My experience at the Kaoshiung Bullet train (High Speed Rail) station is seeing Japanese tourists/expats here buying the Bento boxes over going to numerous Japanese food places , so the different box I see is not a problem, as its more about the food.
You can see comment #3 from Taipei Station, also mention Japanese buying it thus my comment it's good for Japanese routes as it maybe more popular to Japanese
https://www.yelp.com/biz/台&<a href="...27491;區