Kintaro Ame Honten, Kinataro ame
A kind of candy with a cylinder shape:
Wherever you cut it, you will see "Kintaro" face in the cross section.
From this feature, there is a famous "figure of speech".
"Just like a Kintaro-ame"
"no personality, therefore not attractive"
It was invented in the middle of the Edo-era (18th century).
In old days, they sold it at festivals/markets, shouting "Kintaro came out of a candy", and children loved it.
Even now, the manufacturer established a long time ago, called "Kintaro-ame-honten", still produces the Kintaro-ame. For your information, it is located at Taito-ku, Negishi 5-16-12.