In a large skillet, combine the sugar, ros, vanilla bean, zest, salt and fruit pits. Bring to a boil to dissolve the sugar. Cover, remove from the heat and let stand for 15 minutes.
Discard the pits. Bring the liquid to a simmer and add the plums and apricots. Poach the fruit over moderate heat, turning a few times, until just tender, 5 to 8 minutes.
Let the fruit cool in the liquid to room temperature, then refrigerate until chilled.
Serve the fruit in bowls with some of its poaching liquid, along with crme frache and cookies.
