Fit for a celebration, Meringue Cradle Cake evokes all the drama of a layered pastry, yet it comes together as if by magic. A crust of chocolate-flecked meringue covers a luxurious golden cake. It looks complicated, but the heavenly contrast of crispy and tender springs from the simple alchemy of separating egg whites and yolks. Rarely have eggs performed so many tricks in one cake. Yolks pump up the flavor, moisten the crumb, and deepen the color. Whites whip into a brilliant built-in meringue topping. Everything gets used, so there’s no need for egg-white omelets later. Contrary to what others report, this recipe has nothing to do with the Baby Jesus. We discovered it…