The bag and box show the name Ginza Sembikiya (銀座千疋屋) which I was told is a famous shop that was featured on the TV recently. Opening it I saw two wrapped whole grapefruits. "Eh?" I said, after it didn't quite match my expectations of a scrumptiously sweet cake or dessert. However after unwrapping them it became clear, the grapefruits were chocked full (and I mean seriously no space spared in the hollowing-out and filling process) of absolutely delicious grapefruit jelly. Yum!

Needless to say quickly consumed. Apparently each one cost 700 yen (4-5 pounds) but well worth it for a special treat.