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How to ferment vegetables
Contributed by: Black
  • 1. What is the primary purpose of fermenting vegetables?
A) Cooking them quickly
B) Adding sugar
C) Removing all nutrients
D) Preservation and flavor enhancement
  • 2. Which microorganism is primarily responsible for vegetable fermentation?
A) Mold
B) Lactic acid bacteria
C) Salmonella
D) Yeast
  • 3. What is the ideal salt concentration for most vegetable ferments?
A) 2-5%
B) 0.1%
C) 10-15%
D) 50%
  • 4. What does salt do during vegetable fermentation?
A) Neutralizes acids
B) Encourages mold growth
C) Adds sweetness
D) Inhibits harmful bacteria and draws out moisture
  • 5. Why is it important to keep vegetables submerged in brine during fermentation?
A) To add color
B) To stop the fermentation process
C) To make them sweeter
D) To prevent mold growth
  • 6. What type of container is best for fermenting vegetables?
A) Copper
B) Cardboard
C) Glass or food-grade plastic
D) Aluminum
  • 7. What is the ideal temperature range for vegetable fermentation?
A) 32-40°F (0-4°C)
B) Below 0°F (-18°C)
C) 65-72°F (18-22°C)
D) 100-110°F (38-43°C)
  • 8. How long does it typically take to ferment vegetables?
A) 1 day
B) 1 hour
C) 1-4 weeks
D) 6 months
  • 9. What is the purpose of an airlock or fermentation weight?
A) To allow gases to escape while preventing air from entering
B) To measure pH levels
C) To add flavor
D) To increase temperature
  • 10. What is the hissing sound during fermentation caused by?
A) Water boiling
B) Salt dissolving
C) Bacteria fighting
D) Carbon dioxide production
  • 11. What does the term 'anaerobic' mean in the context of fermentation?
A) With heat
B) With oxygen
C) Without oxygen
D) With salt
  • 12. What is kahm yeast?
A) A beneficial bacteria
B) A harmless film that can form on the surface
C) A type of salt
D) A dangerous mold
  • 13. What is a common sign that vegetables are properly fermented?
A) Slimy texture
B) Sour and tangy taste
C) Sweet taste
D) Metallic smell
  • 14. What vegetable is commonly used to make sauerkraut?
A) Cabbage
B) Cucumbers
C) Beets
D) Carrots
  • 15. What vegetable is commonly used to make kimchi?
A) Kale
B) Napa cabbage
C) Spinach
D) Lettuce
  • 16. Why should you avoid using iodized salt for fermentation?
A) It changes the color of the vegetables
B) It's too expensive
C) It can inhibit bacterial growth
D) It makes the vegetables sweeter
  • 17. What does the term 'wild fermentation' refer to?
A) Fermentation using naturally occurring microorganisms
B) Fermentation using added starter cultures
C) Fermentation with no salt
D) Fermentation at high temperatures
  • 18. What is the role of whey in some vegetable fermentation recipes?
A) To change the color
B) To prevent fermentation
C) To add sweetness
D) To provide a starter culture of lactic acid bacteria
  • 19. Which of these is NOT a common spice used in vegetable fermentation?
A) Chili peppers
B) Garlic
C) Ginger
D) Vanilla
  • 20. What should you do if you see fuzzy mold growing on your ferment?
A) Add more salt
B) Just scrape off the mold
C) Continue fermenting
D) Discard the entire batch
  • 21. What is the term for the cloudy sediment at the bottom of a fermenting jar?
A) Scum
B) Lee
C) Kombucha
D) Kefir
  • 22. Which vitamin is fermentation known to increase in some vegetables?
A) Vitamin C
B) Vitamin D
C) Vitamin A
D) Vitamin B12
  • 23. What type of salt is best for vegetable fermentation?
A) Sea salt or kosher salt
B) Epsom salt
C) Table salt
D) Iodized salt
  • 24. What is a benefit of fermented vegetables for gut health?
A) They contain high amounts of saturated fat
B) They contain probiotics
C) They contain high amounts of sugar
D) They destroy gut bacteria
  • 25. What is the purpose of burping a fermenting jar?
A) To add oxygen
B) To release built-up carbon dioxide
C) To check the temperature
D) To add more salt
  • 26. How does fermentation affect the texture of vegetables?
A) They become softer
B) They become slimy
C) They become harder
D) They remain the same
  • 27. After fermentation, how should vegetables be stored?
A) In a sunny location
B) In the refrigerator
C) At room temperature
D) In the freezer
  • 28. What is the main acid produced during lactic acid fermentation?
A) Citric acid
B) Acetic acid
C) Sulfuric acid
D) Lactic acid
  • 29. What happens to the pH level during vegetable fermentation?
A) It becomes neutral
B) It stays the same
C) It decreases (becomes more acidic)
D) It increases (becomes more alkaline)
  • 30. What is a 'fermentation crock'?
A) A type of mold
B) A type of spice
C) A type of salt
D) A specialized jar designed for fermentation
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