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