How to roast coffee beans at home - Exam
  • 1. What is the ideal starting moisture content for green coffee beans before roasting?
A) 20-22%
B) 5-7%
C) 10-12%
D) 15-17%
  • 2. What is the 'first crack' during the roasting process?
A) The sound of beans colliding
B) The sound of beans burning
C) The sound of beans expanding and releasing steam
D) The sound of beans shrinking
  • 3. Which roasting stage is typically associated with a light body and high acidity?
A) French Roast
B) Medium Roast
C) Light Roast
D) Dark Roast
  • 4. What's the primary purpose of cooling coffee beans immediately after roasting?
A) To stop the roasting process
B) To add flavor
C) To make them easier to grind
D) To rehydrate the beans
  • 5. Which of these is a common home roasting method?
A) Microwave Roasting
B) Cryogenic Freezing
C) Air Popper
D) Pressure Cooking
  • 6. What bean defect is most likely indicated by a sour taste after brewing?
A) Quakers
B) Overdevelopment
C) Insect Damage
D) Underdevelopment
  • 7. What is the Maillard reaction in coffee roasting?
A) The release of CO2
B) Chemical reaction between amino acids and reducing sugars
C) A type of bean defect
D) A physical change in the bean structure
  • 8. What safety precaution is crucial during coffee roasting?
A) Using a metal spoon
B) Roasting near flammable materials
C) Adequate Ventilation
D) Wearing Sunglasses
  • 9. After roasting, how long should coffee beans typically rest before brewing?
A) 1 hour
B) Immediately
C) 1 week
D) 24-48 hours
  • 10. What is 'cupping' in the context of coffee?
A) A specific type of coffee brewing
B) Storing coffee beans in a cup
C) The process of grinding coffee
D) A standardized method of tasting and evaluating coffee
  • 11. Which roasting defect would result in a grassy or vegetal taste?
A) Scorching
B) Over-roasting
C) Under-roasting
D) Tipping
  • 12. What's the best way to store roasted coffee beans?
A) In the refrigerator
B) In a paper bag
C) Airtight container, away from light and heat
D) On the counter in direct sunlight
  • 13. What does 'development time' refer to during roasting?
A) Total roasting time
B) Cooling time after roasting
C) Time spent preheating the roaster
D) Time spent after first crack
  • 14. What does the term 'flick' refer to in coffee roasting?
A) A type of bean defect
B) The sound of beans being dropped
C) The color of the bean during early roasting
D) A rapid increase in bean temperature near the end of the roast
  • 15. What temperature range is generally considered suitable for roasting coffee?
A) 700-800°F (371-427°C)
B) 500-600°F (260-316°C)
C) 100-200°F (38-93°C)
D) 300-450°F (149-232°C)
  • 16. Which of these is NOT a common green coffee bean processing method?
A) Fermentation Drying
B) Honey
C) Washed
D) Natural
  • 17. What does 'bean density' influence in roasting?
A) Heat transfer rate
B) Bean origin
C) Bean size
D) Bean color
  • 18. What is the most common cause of scorching during roasting?
A) High humidity
B) Low bean density
C) Excessive heat
D) Insufficient airflow
  • 19. What is the Agtron score used for?
A) Measuring roast level
B) Measuring bean moisture
C) Measuring airflow
D) Measuring bean density
  • 20. What is the second crack during the roasting process?
A) The sound of water evaporating
B) The sound of the cooling process
C) Oil starts to be released and cellulose structure breaks down
D) The sound of chaff burning
  • 21. What is chaff?
A) A type of coffee bean defect
B) A type of coffee grinder
C) A specific coffee brewing method
D) The thin, papery skin that comes off the beans during roasting
  • 22. Which roast level typically exhibits chocolate and nutty notes?
A) Medium Roast
B) Light Roast
C) Cinnamon Roast
D) Dark Roast
  • 23. What effect does altitude have on green coffee beans?
A) Altitude has no impact on bean quality
B) Higher altitude often leads to denser beans and more complex flavors
C) Higher altitude always results in lower quality beans
D) Higher altitude means less caffeine
  • 24. What is the purpose of a tryer?
A) To remove chaff from the roaster
B) To sample beans during the roasting process
C) To measure the temperature of the roaster
D) To stir the beans during roasting
  • 25. Which gas is released during the roasting process?
A) Oxygen (O2)
B) Nitrogen (N2)
C) Carbon Dioxide (CO2)
D) Helium (He)
  • 26. Which coffee bean defect presents a pale, lifeless color after roasting?
A) Baked Beans
B) Scorchers
C) Quakers
D) Tippers
  • 27. What does ROR stand for in coffee roasting?
A) Rate of Rise
B) Rest on Rack
C) Roast Over Roast
D) Roast or Ruin
  • 28. Why is it important to clean your roaster regularly?
A) To improve the taste of the coffee
B) To prevent bean defects
C) To prevent fires and ensure even roasting
D) To make the roaster look nicer
  • 29. What is a fluid-bed roaster?
A) A roaster that uses direct flame
B) A roaster that suspends the beans in hot air
C) A roaster that uses oil to transfer heat
D) A roaster that uses infrared radiation
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