Just sampled some strawberries in white chocolate from Japan this afternoon for lunch (picture below). What's interesting is how dehydrated the strawberries are inside, they couldn't be bigger than the tip of my pinky finger. Great texture though, the berries basically dissolve in one's mouth.
Suspecting that these tiny little berries are in fact alpine strawberries Fragariae vesca, I asked my wife but she assured me that these are indeed normal strawberries, the ones we know as Fragaria x ananassa. Reading the package didn't help since it just says 乾燥イチゴ, or "dried strawberries". I didn't realize freeze drying would result in such a terribly small fruit.
Anyway, if you get the chance, try them, they are quite good.
Author - County Director, Santa Cruz County and Farm Advisor, Strawberries & Caneberries