T.K. of the AskAKorean Twitter account says: "Genius at work. E-mart in Korea is now selling the 'One a Day Banana' pack, containing several bananas of different ripeness so that you can eat them over several days. Genius at work. E-mart in Korea is now selling the "One a Day Banana" pack, containing several bananas of different ripeness so that you can eat them over several days.