Pitch the yeast. Add the yeast to the solution after it has cooled sufficiently. Follow the instructions on the yeast package. Rouse the yeast. Stir the solution vigourously so that there is some dissolved oxygen in the solution.
Yeast needs some initial oxygen in order to get a good start.
After stirring, cover the solution and. . . The fermentation process usually takes a couple of weeks to complete - Take measurements every couple of days or so after the first week. When the gravity stops dropping, the fermentation is complete. Other Factors There are several other factors to be aware of when fermenting sugar. The process is affected by temperature - if you are impatient, you can use an aquarium heater to keep the temperature around 30 degrees.