On a busy afternoon in Tokyo's Asakusa district, a tour guide leads a small group to a sidewalk outside a branch of clothing chain Uniqlo, where he produces a tape recorder."The company Minato Shokuhin, best known for their Japanese ginger ponzu sauce, used to be based here. You might remember the jingle," he says, pushing play. After the tune ends, a man in his early 20s volunteers a memory of his grandmother humming it. "It was very popular with her generation," the guide agrees, and the tour moves on.But their shared nostalgia for a discontinued condiment is, in fact, a collective lie. M…READ FULL ARTICLE