“Handy” for “all things Japanese”, this diminutive Upper East Side mart is a long-standing (since 1907) purveyor of “high-quality” goods, from “fresh fish” and produce to “authentic” ingredients like “soba noodles, aji-mirin, natto or fresh shiso leaves”; sushi and bento boxes are also available, and although prices strike some as “a little expensive”, for “last-minute” “essentials” it’s “your...