A professional who operates continuous churn to produce butter of specified grade and quality, and performs quality control tests. Respnsibilities include:

• Starts agitator of salt injector and fills tank of injector with salt solution.
• Turns valve control and starts pump to move cream from storage tank to churn.
• Presses switches to start beater and extruders of churn, and adjusts controls while monitoring gauge and ammeter to regulate churn speed.
• Connects salt injector tube to extruder of churn and starts salt injector pump.
• Raises or lowers nozzle to adjust height of buttermilk drainpipe to control level of buttermilk in extruder, using wrenches.
• Observes butter granules dropping from beater section to ensure that beater is operating efficiently.
• Removes sample of butter from discharge of churn and performs standardized tests for moisture, butterfat, and color content.
• Tastes butter to detect undesirable flavors and to ensure required salt level.
• Rubs sample of butter between thumb and finger to determine if texture meets specifications.
• Turns control knobs to adjust speed of beater, speed of salt pump, height of buttermilk discharge pipe, or adds vegetable color to salt solution to ensure butter meets specifications.
• Observes and listens to churn to detect possible malfunctions, such as leaks or plugging, and reports malfunctions or undesirable taste to supervisor.
• Mixes salt and water, according to formula, to maintain stock of solution.
• Records production and test data on record sheet.