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