MeHeart H.
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Oddly, we found a super spicy powder (made out of one of the hottest pepper in the world) via this store, highly recommend it if you have been craving spicy and couldn't find it anywhere in Tokyo. They recommend some good sake as well if you have tasted a good one before, show them the picture, and if they don't have it, they will try to match, not alot of English, but good enough.