A professional who operates any of following machines and equipment to relieve regular operators engaged in processing cocoa beans into chocolate liquor and in producing cocoa powder and sweet chocolate, according to formula. Respnsibilities include:

• Controls roaster that roasts cocoa beans to develop specified color and flavor and reduces moisture content of beans.
• Tends mill to grind nibs (cracked cocoa beans) into liquid chocolate of specified fineness.
• Tends hydraulic press to extract cocoa butter from chocolate liquor, and operates cocoa room machinery and equipment to grind and pulverize cocoa cakes into cocoa powder.
• Mixes ingredients, such as chocolate liquor, sugar, and powdered milk to make sweet chocolate.
• Operates refining machine to grind chocolate paste to specified consistency.
• Operates tempering equipment to control temperature of chocolate in cooling process before molding.
• May tend molding machines, pressure cookers, and dryers.
• May assist in supervising and training production line workers.