Passover is coming. In the darkness, as always, the “Seder Walkers” will come. Arguing over the quickest route, they’ll sweep through roads, cities and homes, bearing packs of tasteless kosher-for-Pesach dishes in their hands - greasy latkes as big as Black Widows, moist matza balls as big as baseballs. Over the year, they have almost been forgotten - indeed, some started to believe they...