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