Puff pastry, jam and a little sugar come together in this pretty turnover, called “jalousie” in French. This expression comes from a type of window shutter, “gelosia,” which originated in Italy and whose openings can be adjusted to allow one to look out without being seen. The slits in the dough are reminiscent of these shutters. No doubt your colleagues will be jealous when they see your dessert at lunchtime.