Combine sugar and water in a saucepan. Bring mixture to a boil, stirring or swirling occasionally until sugar has dissolved. Bring to a boil, reduce heat to continue simmering until liquid thickens and turns a deep amber color.
Remove from heat; whisk in orange juice. Bring mixture to a boil and cook for approximately ten minutes, until it has slightly reduced. Remove from heat and place in glass jar; cool.