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