A professional who tends conveyor line enclosed in series of circular chambers to cook canned milk to sterilize and change viscosity and color of milk. Respnsibilities include:

• Turns steam, water, and hot air valves and observes gauges to adjust temperature of heating, cooking, cooling, and drying chambers.
• Observes panel lights for machine failure and stops conveyor to remove jammed cans.
• Observes filled sealed cans moving through chambers and removes dented cans or sample test cans.
• Opens sample can and dips spoon into sterilized milk to observe grain (texture), viscosity, and color.
• May alter cooking temperature or add measured amount of calcium or phosphate to milk batch to obtain specified grain and viscosity.