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How to ferment foods naturally for preservation
Contributed by: Kay
  • 1. What is the primary goal of food fermentation?
A) Cooking food faster
B) Making food sweeter
C) Removing all bacteria
D) Preservation and flavor development
  • 2. What microorganisms are most commonly involved in fermentation?
A) Only yeasts
B) Bacteria, yeasts, and molds
C) Viruses and parasites
D) Only bacteria
  • 3. What does anaerobic mean?
A) With salt
B) Without oxygen
C) Without sugar
D) With oxygen
  • 4. What is the purpose of salt in many vegetable ferments?
A) To speed up the fermentation process
B) To kill all bacteria
C) To inhibit undesirable bacteria and draw out moisture
D) To add flavor only
  • 5. What is brine?
A) Salt water solution
B) Vinegar solution
C) Oil solution
D) Sugar solution
  • 6. What gas is commonly produced during vegetable fermentation?
A) Oxygen
B) Methane
C) Nitrogen
D) Carbon dioxide
  • 7. Why is it important to keep vegetables submerged in brine during fermentation?
A) To speed up fermentation
B) To add more flavor
C) To prevent mold growth and spoilage
D) To make the vegetables softer
  • 8. What is the role of lactic acid bacteria in fermentation?
A) Produces lactic acid, inhibiting spoilage organisms
B) Breaks down fiber
C) Produces alcohol
D) Produces acetic acid
  • 9. Which of these is a common fermented vegetable?
A) Boiled potatoes
B) Sauerkraut
C) Roasted carrots
D) Steamed broccoli
  • 10. What is a fermentation crock?
A) A specialized container for fermentation
B) A cleaning tool
C) A type of oven
D) A type of spoon
  • 11. What is 'wild' fermentation?
A) Fermentation with alcohol
B) Fermentation in a forest
C) Fermentation using only commercial cultures
D) Fermentation using naturally occurring microbes
  • 12. What is the approximate ideal temperature range for fermenting most vegetables?
A) 80-90°F (27-32°C)
B) 32-40°F (0-4°C)
C) 100-110°F (38-43°C)
D) 60-75°F (15-24°C)
  • 13. What is the purpose of a weight in vegetable fermentation?
A) To speed up fermentation
B) To keep vegetables submerged below the brine
C) To add flavor
D) To make the vegetables heavier
  • 14. What does a Kahm yeast film indicate on a ferment?
A) Indicates the ferment is extra nutritious
B) Indicates spoilage
C) Indicates the ferment is done
D) Normal and harmless, can be removed
  • 15. How does fermentation extend the shelf life of food?
A) By drying the food
B) By freezing the food
C) By creating an acidic environment that inhibits spoilage bacteria
D) By adding preservatives
  • 16. What are some health benefits associated with consuming fermented foods?
A) Decreased energy levels
B) Improved gut health and digestion
C) Increased blood sugar
D) Increased risk of food poisoning
  • 17. Which of these is a fermented dairy product?
A) Yogurt
B) Milk
C) Ice cream
D) Butter
  • 18. What is SCOBY in kombucha making?
A) Sweet Coffee Or Black Yogurt
B) Sour Culture Of Berries Yearly
C) Simple Culture Of Beverages Yearly
D) Symbiotic Culture Of Bacteria and Yeast
  • 19. What is the primary sugar source used in kombucha fermentation?
A) Maple syrup
B) Cane sugar
C) Artificial sweeteners
D) Honey
  • 20. What is a common flavor added during the second fermentation of kombucha?
A) Vinegar
B) Salt
C) Fruit
D) Oil
  • 21. Which of the following is a fermented soy product?
A) Miso
B) Soy milk
C) Soy sauce
D) Tofu
  • 22. What is koji?
A) A type of salt
B) A type of seaweed
C) A mold used to ferment grains
D) A type of spice
  • 23. What is the purpose of using an airlock during fermentation?
A) To speed up the fermentation process
B) To add air to the fermentation
C) To keep the ferment cold
D) To allow gas to escape while preventing air from entering
  • 24. Why is it important to use clean equipment when fermenting foods?
A) To save time
B) To prevent the growth of harmful bacteria
C) To make the food taste better
D) To speed up the fermentation process
  • 25. What does pH measure?
A) Salt content
B) Sugar content
C) Acidity or alkalinity
D) Temperature
  • 26. What pH level is generally considered safe for long-term fermented vegetable storage?
A) Around 6
B) Below 4.6
C) Around 8
D) Above 7
  • 27. What is the role of whey in some fermentation processes?
A) Inhibits all bacterial growth
B) Adds bitterness
C) Adds sweetness
D) Provides beneficial bacteria and enzymes
  • 28. Which of these is a fermented beverage?
A) Juice
B) Soda
C) Kefir
D) Iced tea
  • 29. What is the 'pellicle' that forms on some ferments?
A) A cellulose mat formed by bacteria or yeast
B) A type of mold
C) A layer of oil
D) A layer of salt
  • 30. What does the term 'lacto-fermentation' refer to?
A) Fermentation by lactic acid bacteria
B) Fermentation by lactose
C) Fermentation of milk only
D) Fermentation without salt
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