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