Vodka and Orange

Directions

1. 1
   Combine the orange juice and sugar in a small saucepan and bring to a boil over high heat.
2. 2
   Cook until reduced to 1 cup.
3. 3
   Add the Grand Marnier and cook for 1 minute.
4. 4
   Remove from heat and let cool to room temperature, then cover and refrigerate.
5. 5
   (The orange syrup can be made up to 1 week in advance and stored in the refrigerator.)
6. 6
   In each of 4 to 6 rocks glasses, stir together 2 tablespoons of the cold orange syrup and a shot of vodka.
7. 7
   Add a scoop of ice and top off with club soda.
8. 8
   Float a slice of orange on top of each drink and serve.