Answer:
More than Three (3) unit operations are involved when in the process of converting green coffee beans into brewed coffee. Examples are Drying operation, Milling, Pyrolysis process, Grinding operation, etc.
The seed of the coffee plants is called beans and it is transformed into brewed coffee through several steps.
There is a total of three units involved in converting the green coffee beans into brewed coffee.
1. Picking: It involves the wet, dry and semi-dry processes. The procedure of picking the coffee beans from the plant comes under this step.
2. Milling: Steps like hulling, polishing, cleaning and grading of coffee beans comes under milling.
3. Ageing and decaffeination: extraction of caffeine from the beans before roasting using oil or other solvent is called decaffeination.
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