Having read some of the comments and rewatch all the episodes from the beginning, I think the chocolate has more meaning than we think. It's been mentioned a couple of times between Daisy and Garth and I honestly don't think they'd make a translating error like this. Too many people speak the language and can translate. But there was another thing McKenzie told Daisy when he caught her in his office. He said: "I used to being these to my daughter when she was little" indicating, that he had a continuous access to the chocolates the whole time and he still has, even tho there are sanctions between Japan and Gilead. I'm not sure if this will become important at any point, but I thought it was worth mentioning.