A professional who operates conche machine to heat and agitate refined chocolate mass with cocoa butter to enrich color, flavor, and texture. Respnsibilities include:

• Pumps specified amount of chocolate mixture into steam-heated stationary tank or rotary drum.
• Meters out specified amount of such ingredients as cocoa butter or flavorings.
• Turns steam valves and adjusts thermostat to heat contents of tank or drum to specified temperature.
• Pushes lever to start agitators and rotate drum.
• Pushes levers to change rate of agitation, drum rotation, and temperature, following specified time cycles.
• Observes and tastes mixture to evaluate conformity to standard and sends sample to laboratory for analysis.
• Adjusts temperature, agitation speed and timing cycle, and adds ingredients, such as cocoa butter and lecithin, according to laboratory findings.
• Pumps mixture to storage tank.