A professional who tends one or more machines that cool liquid margarine, lard, or shortening, and knead solidified material preparatory to packaging. Respnsibilities include:

• Starts kneading unit of machine.
• Opens valve to admit liquid material to cooling unit that solidifies it and to transfer solids to kneading unit that imparts smooth texture.
• Observes gauges and adjusts controls to keep specified temperature and pressure of material in cooling and kneading units.
• Turns valves to regulate flow of processed material into hoppers of packaging machine.
• May clean lines and equipment, using pressurized steam and nitrogen gas.