Strawberry and chocolate dacquoise on sale at a Family Mart convenience store.
Food fads are so common in Japan that they overlap. Mostly, we see a certain type of food (like rusks) spread while a certain flavor also starts to proliferate. Right now, orange seems to be the flavor du jour. Entire displays of orange-flavored snacks are in some convenience stores. Rusks are still running their course as a fad, but I think they're petering out and I think that dacquoise, a French confection with a meringue base, may be poised to jump off the mark as the next food fad. My feeling is that dacquoise are the logical next step in the long-running popularity of macarons, and they're not as delicate and easier to put in shelf-stable packaging.