i thought japanese curry was one of those "white people foods" from the meiji era that japanese people thought was the reason white people were big and tall and successful. so because the brits looked at the rich and extremely varied culinary traditions of india and said "it's all bits of veg in yellow gravy innit" and then made a dish called curry consisting of bits of veg in yellow gravy, the japanese saw the british sailors eat that and made their own version

Ramen is Chinese, the Japanese term comes from "la mien" in Chinese or pulled noodles. Alcoholic fermentation of rice spread to Japan from China, and sushi is likely of southeast Asian origin, with the first written record of sushi-like food from 4th century BCE in China, all of this according to Wikipedia. English Wikipedia does credit mochi being japanese, I'd be surprised if this is actually the case, I found a SCMP headline claiming mochi were introduced from China in 300BCE, pointing to Taiwan's "moâ chi" and Hong Kong's "log máih chih" type of rice snacks.

Most foods we attribute to Japanese culture are Chinese in origin.

3/4 have their origins outside of Japan lmfao