Cool Treats for Warm Japanese Summer Days: Say 'Fruit and Vegetable Bars'

2 things I learned from Cool Packaging: Frozen Summer Treats From Japan by Ryoko (on PingMag) are first that "frozen treats began to be produced as a substitute for ice cream after World War II, when almost all dairy products were designated for military use. A popular simple treat at the time was merely ice mixed with sweetener, into which a pair of disposable chopsticks were stuck. Very basic, but it made folks happy in those tough times" and second that adzuki beans are part of the mix as they are in many Japanese candies...