I missed tasty pizza for a reasonable price.
You either pay 500-1000 yen for a shitty pizza (with the exception for Napolis Pizza chain, which isn't THAT good anyway) or end up paying 3000 yen for a pizza which is just too much.
Funny that you dislike Japanese beer, most of my favorite beers to this day come from Japan. Although I guess Sweden isn't that big of a beer brewing country anyway. I love Kirin, Sapporo, Asahi etc. I also love the even cheaper ones from the really obscure supermarkets (like Piago's own beer for 70yen).
Like Nagisa said, I also miss cheap fruit. The fruit in Japan is so damn expensive.
What I miss from Japan in Sweden: JAPANESE FOOOOOOOD (and liquor (umeshu *-*)).
Also our cabbages are a different kind than the ones in Japan (and also expensive as fuck). I miss Japanese mushrooms, and japanese fast food chains (like sukiya). I miss izakaya etc etc etc. (I'm longing for the day when I can once again taste the heavenly Kyabetsu mori dish from Torikizoku, which is my favorite izakaya lol).
In the end, I miss more from Japan in Sweden than from Sweden in Japan, lol.
edit: yes, i love cabbage xD