How to Make It
Preheat oven to 200°.
Arrange orange slices on a wire rack coated with cooking spray; place rack on a baking sheet. Bake at 200° for 3 hours or until dried.
Combine peppercorns and next 5 ingredients on a double layer of cheesecloth. Gather edges of cheesecloth together; tie securely.
Combine orange slices, spice sachet, sugar, orange juice, and wine in a medium saucepan over medium heat. Heat just to a simmer (do not boil). Reduce heat to low, and simmer 30 minutes. Discard sachet.
Toasting whole spices releases incredibly robust flavor; however, you can substitute ground dry spices if you'd prefer. About 1/2 teaspoon of the ground version of each spice called for should do the trick.