A professional who tends kettles and separating machines that cook mash and separate resulting liquid (wort). Respnsibilities include:

• Assembles piping and starts pump or turns valve to start flow of mash from grinder to kettles.
• Places time and temperature chart in automatic recorder.
• Starts sweep to stir mash.
• Turns valve to admit steam into cooking kettle, observes pressure gauge, thermometer, and clock, and cooks mash for specified time at specified temperature.
• Drops iodine on mash sample and observes resulting color to determine if mash is sufficiently cooked.
• Records time and number of batches run.
• Turns valves to pump mash through centrifuge and vibrating filter to remove wort.
• Turns sparging valve to spray water over spent grain to recover remaining wort.
• Observes ammeter, thermometer, water and mash flowmeters and adjusts valves and pump pressure to prevent overloading of separating machines.
• Cleans kettles, piping, centrifuges, filters, and clarifiers.
• May pump spent grain through roller press to remove wort.
• May operate centrifuge to remove nonsoluble solids from wort.
• May push control panel button that automatically sets temperature.