A professional who tends fermentation tanks to propagate yeast in molasses wort. Respnsibilities include:

• Opens valves to admit specified amounts of seed yeast and molasses wort into tanks.
• Dumps, pours, or meters measured quantities of nitrogen and phosphate to supplement diet of yeast.
• Pumps air into tank to aerate wort.
• Sets thermostat to maintain prescribed temperature levels in fermentation tanks.
• Tests wort for acidity, using pH meter, and adds specified chemicals to maintain required acidity.
• Adds additional wort and chemicals to tank, as yeast concentration increases, to facilitate yeast growth.
• Pumps wort with yeast cream (concentrated yeast suspension) to yeast-separating department.