11.   Bring the mixture to a simmer over medium heat, stirring to dissolve the sugar.

12.   Bring to a boil, stirring constantly with a wooden spoon until the sugar is dissolved.

13.   Bring to a boil, stirring until the sugar is dissolved.

14.   Bring to a near-simmer over moderate heat, stirring to dissolve the sugar.

15.   Bring to a low boil, and stir until sugar is completely dissolved.

16.   Bring to a simmer, stirring to dissolve the sugar.

17.   Bring to a steaming near-simmer over moderate heat, stirring to dissolve the sugar.

18.   Bring to boil over high heat, whisking to dissolve sugar.

19.   Bring to boiling just until sugar is dissolved.

20.   Bring the mixture to a hard boil and stir to dissolve the sugar.