In just two weeks’ time, the entire Jewish world will gather at Passover seders to re-enact the ritual of telling the story of the exodus from Egypt. All the old favorites will be there: Bubby and Zaide, matzah ball soup, the four questions read by your youngest niece, and of course, all over four cups of kosher for Passover wine. But for many of us, particularly those observing the two seders of the Diaspora,...