Makes four ice cream sodas
2 cups fresh orange juice
4 large scoops vanilla ice cream
Seltzer, well chilled
Bring the orange juice to a boil in a medium saucepan and simmer until it is reduced by half. Chill well.
Drop a scoop of ice cream into the bottom of 4 tall glasses, pour one quarter of the orange juice over each scoop and top with the chilled seltzer. Stir with a long spoon until the orange juice and seltzer are just combined.