Introduction
This refers to the self-serve smoothie machines found in many 7-Eleven convenience stores across Japan, including branches in Tokyo. Customers pick a frozen fruit or vegetable cup from the freezer, scan its barcode, and place it in the in-store machine, which blends it into a fresh smoothie in about 30 seconds for roughly 300 yen. It's a popular, budget-friendly way for travelers to get a quick fresh drink while exploring the city.