CDM Dough Preparation & Ingredient Handling 2 — Questions and Answers
Question 1: What is the primary purpose of autolyse in yeast-raised doughnut dough preparation?
- To activate the yeast before mixing
- To hydrate flour proteins and begin gluten development without mechanical mixing (Correct answer)
- To dissolve sugar evenly throughout the dough
- To reduce the fermentation time by half
Correct answer: To hydrate flour proteins and begin gluten development without mechanical mixing
Autolyse allows flour and water to hydrate fully, initiating gluten formation passively before full mixing begins.
Question 2: When scaling doughnut ingredients, a baker needs 2.5 lbs of bread flour but the recipe calls for 40 oz. How much additional flour is needed?
- 0 oz — they are equal (Correct answer)
- 4 oz more flour is needed
- The recipe needs 8 oz less
- 2 oz more flour is needed
Correct answer: 0 oz — they are equal
2.5 lbs equals exactly 40 oz (2.5 × 16 = 40), so no additional flour is needed.
Question 3: Which type of shortening produces the most tender crumb in cake doughnuts due to its crystal structure?
- Liquid vegetable oil
- All-hydrogenated shortening
- High-ratio (emulsified) shortening (Correct answer)
- Lard
Correct answer: High-ratio (emulsified) shortening
High-ratio shortening contains emulsifiers that allow more even fat distribution, producing a finer, more tender crumb.
Question 4: A yeast-raised doughnut dough that tears during sheeting most likely indicates:
- Excessive sugar content
- Over-proofing before sheeting
- Insufficient gluten development or under-mixing (Correct answer)
- Too much fat in the formula
Correct answer: Insufficient gluten development or under-mixing
Tearing during sheeting signals weak gluten structure, usually caused by under-mixing or insufficient hydration.
Question 5: What happens to yeast activity when dough temperature exceeds 140°F (60°C)?
- Yeast enters a dormant state and can be reactivated by cooling
- Yeast produces alcohol more rapidly, improving flavor
- Yeast cells are killed and fermentation stops permanently (Correct answer)
- Yeast switches to producing carbon dioxide only
Correct answer: Yeast cells are killed and fermentation stops permanently
Temperatures above 140°F denature yeast proteins and kill the cells, ending fermentation irreversibly.
Question 6: In a cake doughnut formula, the function of baking powder is to:
- Tenderize the gluten structure
- Provide leavening through CO2 release during mixing and baking (Correct answer)
- Add sweetness and browning
- Improve dough extensibility during cutting
Correct answer: Provide leavening through CO2 release during mixing and baking
Baking powder releases carbon dioxide gas when moistened and heated, causing the batter to rise during frying.
Question 7: Which mixing method is standard for developing yeast-raised doughnut dough to proper gluten strength?
- Creaming method, starting with fat and sugar
- Straight dough method, mixing all ingredients simultaneously (Correct answer)
- Muffin method, folding wet into dry ingredients
- Biscuit method, cutting fat into flour
Correct answer: Straight dough method, mixing all ingredients simultaneously
The straight dough method combines all ingredients at once and relies on extended mixing to develop gluten structure.
CDM Dough Preparation & Ingredient Handling 2
What is the primary purpose of autolyse in yeast-raised doughnut dough preparation?