1. Sushi.
The sushi in my home country just don't cut it! We don't have chu-toro, tuna mayo or aburi-samon. The rice seems "wrong", the soy-sauce is weird, and you can barrelly taste the hotate. To top it, our sushi is more than twice as expensive as the sushi in Japan...
2. Nashigoren
This is not a japanese dish, but I ate it for lunch about 20 times in the 4 months i spent in Japan. It was just so damn tasty and fulfilling!
3. Soup Curry
I have only eaten soup curry twice, but i really love it. I know that I won't eat it very often, even when I return to Japan, but I like having the possibility! It's really tasty, easy to find, and not that expensive!
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I also love sukiyaki, okonomiyaki and yakiniku, but I don't really miss these courses(yet).