When you're ready to bake, preheat oven to 350F. Slice oranges and remove the seeds. If the syrup has not completely saturated the rinds, boil the slices in the syrup until the rinds are saturated (this should not be necessary). Chop the oranges into small pieces (I used a blender), and mix in 1/3 cup sugar, 1/2 tsp cinnamon, and 1/4 tsp ginger. Peel, core, and quarter your apples, mix them with the remaining sugar, cinnamon, and ginger. Make and roll your pie crust. Place a layer of apples on the bottom of the crust, cover with a layer of oranges. Repeat the layering until you're out of filling. (Typically, you'll get two layers of each) Put on the lid, crimp the edges, and bake for 1 hour.

Ten minutes before the pie finishes baking, mix your rosewater and sugar and stir over low heat until it becomes syruppy. Five minutes before the pie finishes baking, remove the pie from the oven, brush on the rosewater syrup, and return the pie to the oven until the hour is up.