A professional who controls equipment to cook grain meal to prepare mash for fermentation process prior to distillation into alcohol, gin, or whiskey. Respnsibilities include:

• Fills cooker with water and opens valves to admit steam that circulates through pipes in vat and heats water to specified temperature.
• Pumps ground meal from meal tank into hopper, balanced on scale, to weigh specified amount and turns handwheels to regulate flow of meal into cooker.
• Starts revolving blades in cooker to agitate mixture as it cooks.
• Observes temperature gauges to ascertain temperature of mixture in cooker and turns valves to increase or decrease temperature.
• Cooks mash for specified time and pumps cooked mash into cooling tub.
• Pumps cooled mash into fermenting tank.
• Opens valves to admit compressed air, through perforated pipes at bottom of fermenting tank, to keep meal in suspension as it flows from cooling tub into fermenting tank.