What would you say is Japan's most well-known food overseas, after sushi?

Pot/cup noodles. I always refer to these when I'm cornered by some bore banging on about how wonderfully healthy is the Japanese diet.

In the U.S. I'd say cup ramen. But I'm not sure how many of the college students who consume it know it's a Japanese [spin on Chinese?] food.

I agree if you asked the average person name two Japanese foods the answer would probably be "Sushi and umm...??"

In the UK, it's katsu curry. It's in most supermarkets as a ready meal.

Can't say I've noticed that. But why on earth would anyone in the UK eat that when you have authentic Indian and Thai curry in the UK?

Sake!

Never seen Katsu curry in any of the major supermarkets, if it is tere it is not well displayed. But agree with Pukey2, wouldn't want it when I can get both authentic Indian and Thai cuisine as well as good "British" curry, as we have adopted and adapted especially Indian food over the last 250 years (the first known published recipe for curry was in Hanna Glass "The art of cookery made plain and easy" 1747. Was very similar to a modern Balti!).

Chinese differentiates their ramen noodles with Japanese varieties calling them Nisshiki or Japanese style.

Mainland Chinese are very well aware of the difference and had accepted that it is different from theirs.

I'll bet my lunch money that it's not niku maki onigiri with nodo ame Kit Kats for dessert.

Teppanyaki, as a general term, is popular although it is a cooking style and not a food.

For the people who've "never seen katsu curry in a UK supermarket", here are images of the ones on sale in Tesco, Asda, Morrisons, ..... You may prefer Indian or Thai curry yourself, but that doesn't mean other people aren't buying it.

https://www.google.co.jp/search?q=katsu+curry+ready+meal&source=lnms&tbm=isch&sa=X&ved=0ahUKEwimlcmH4NPYAhUGFpQKHSEyACQQ_AUICigB&biw=1280&bih=682&dpr=2

kohakuebisu, I didn't say they were not there only that I have not seen them which would indicate they have not been that well displayed.

people may well be buying them, which of its self is not a recommendation, people also buy pot noodles which i wouldn't feed to my dog, the RSPCA would object!

Ninjas and pokemon. Everyone else gave great answers, but...

I hate answering questions half asleep... Ramen and sushi.

ugh. Sorry everyone.

Ramen, thanks to manga and anime.

And fugu because of "deadly" reputation.

cup noodle

instant ramen

In the UK, it's katsu curry. It's in most supermarkets as a ready meal.

The katsu is chicken, the curry is more like yellow UK Chinese takeaway curry than browned-onions-based Japanese curry, and the rice won't be short-grain, but it is sold as Japanese katsu curry. Greggs even have a katsu curry pastie.

Oh, I have to agree ramen is probably above teriyaki (which I posted earlier). Ramen seems to be known everywhere now.

Though to be fair, it's likely originally Chinese. That said, Japanese and Chinese ramen have significantly divulged to essentially be different dishes now. I actually prefer the Japanese version for the most part, even though I generally prefer Chinese food over Japanese food.

I forgot, tofu must also be pretty well-known.

Teriyaki, though that’s a flavour more than a food.

Over here it's sukiyaki.

Yeah I agree with Bintaro, I'm betting it's ramen.

Ramen.

Tempura. Although Udon is also catching on..