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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) 20-22%
B) 15-17%
C) 10-12%
D) 5-7%
  • 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) Light Roast
B) French Roast
C) Dark Roast
D) Medium Roast
  • 4. What's the primary purpose of cooling coffee beans immediately after roasting?
A) To rehydrate the beans
B) To stop the roasting process
C) To make them easier to grind
D) To add flavor
  • 5. Which of these is a common home roasting method?
A) Microwave Roasting
B) Pressure Cooking
C) Air Popper
D) Cryogenic Freezing
  • 6. What bean defect is most likely indicated by a sour taste after brewing?
A) Underdevelopment
B) Insect Damage
C) Overdevelopment
D) Quakers
  • 7. What is the Maillard reaction in coffee roasting?
A) The release of CO2
B) A physical change in the bean structure
C) Chemical reaction between amino acids and reducing sugars
D) A type of bean defect
  • 8. What safety precaution is crucial during coffee roasting?
A) Wearing Sunglasses
B) Roasting near flammable materials
C) Adequate Ventilation
D) Using a metal spoon
  • 9. After roasting, how long should coffee beans typically rest before brewing?
A) Immediately
B) 1 hour
C) 1 week
D) 24-48 hours
  • 10. What is 'cupping' in the context of coffee?
A) Storing coffee beans in a cup
B) A standardized method of tasting and evaluating coffee
C) A specific type of coffee brewing
D) The process of grinding coffee
  • 11. Which roasting defect would result in a grassy or vegetal taste?
A) Over-roasting
B) Scorching
C) Under-roasting
D) Tipping
  • 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) Cooling time after roasting
C) Time spent after first crack
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) The color of the bean during early roasting
C) A type of bean defect
D) The sound of beans being dropped
  • 15. What temperature range is generally considered suitable for roasting coffee?
A) 300-450°F (149-232°C)
B) 500-600°F (260-316°C)
C) 700-800°F (371-427°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) Natural
C) Washed
D) Honey
  • 17. What does 'bean density' influence in roasting?
A) Bean color
B) Bean origin
C) Bean size
D) Heat transfer rate
  • 18. What is the most common cause of scorching during roasting?
A) Low bean density
B) Insufficient airflow
C) Excessive heat
D) High humidity
  • 19. What is the Agtron score used for?
A) Measuring bean moisture
B) Measuring airflow
C) Measuring roast level
D) Measuring bean density
  • 20. What is the second crack during the roasting process?
A) The sound of chaff burning
B) The sound of the cooling process
C) Oil starts to be released and cellulose structure breaks down
D) The sound of water evaporating
  • 21. What is chaff?
A) A type of coffee bean defect
B) A specific coffee brewing method
C) A type of coffee grinder
D) The thin, papery skin that comes off the beans during roasting
  • 22. Which roast level typically exhibits chocolate and nutty notes?
A) Cinnamon Roast
B) Dark Roast
C) Medium Roast
D) Light Roast
  • 23. What effect does altitude have on green coffee beans?
A) Higher altitude often leads to denser beans and more complex flavors
B) Higher altitude always results in lower quality beans
C) Altitude has no impact on bean quality
D) Higher altitude means less caffeine
  • 24. What is the purpose of a tryer?
A) To remove chaff from the roaster
B) To measure the temperature of the roaster
C) To sample beans during the roasting process
D) To stir the beans during roasting
  • 25. Which gas is released during the roasting process?
A) Nitrogen (N2)
B) Helium (He)
C) Carbon Dioxide (CO2)
D) Oxygen (O2)
  • 26. Which coffee bean defect presents a pale, lifeless color after roasting?
A) Quakers
B) Scorchers
C) Baked Beans
D) Tippers
  • 27. What does ROR stand for in coffee roasting?
A) Roast Over Roast
B) Rest on Rack
C) Rate of Rise
D) Roast or Ruin
  • 28. Why is it important to clean your roaster regularly?
A) To make the roaster look nicer
B) To prevent bean defects
C) To prevent fires and ensure even roasting
D) To improve the taste of the coffee
  • 29. What is a fluid-bed roaster?
A) A roaster that uses direct flame
B) A roaster that uses oil to transfer heat
C) A roaster that uses infrared radiation
D) A roaster that suspends the beans in hot air
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