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