CPM Flour, Fat & Liquid Selection 3 — Questions and Answers
Question 1: A baker notices their pie crust shrinks significantly during blind baking. What is the most likely cause?
- Too much fat was used
- The dough was not rested in the refrigerator before baking (Correct answer)
- Too little water was added
- The oven temperature was too low
Correct answer: The dough was not rested in the refrigerator before baking
Resting dough in the refrigerator relaxes gluten strands; skipping this step leaves tension in the dough that causes it to snap back and shrink.
Question 2: What effect does adding a small amount of apple cider vinegar to pie dough have?
- Promotes gluten development for a stronger crust
- Inhibits gluten formation for a more tender crust (Correct answer)
- Acts as a leavening agent
- Adds significant apple flavor
Correct answer: Inhibits gluten formation for a more tender crust
Acid in vinegar interferes with gluten bond formation, making the dough more tender and easier to work with.
Question 3: Which fat has the highest water content among common pie crust options, which contributes to steam-leavening and flakiness?
- Lard
- Vegetable shortening
- Butter (Correct answer)
- Coconut oil
Correct answer: Butter
Butter contains approximately 15–18% water, which converts to steam during baking and helps lift and separate pastry layers.
Question 4: When substituting whole wheat flour for all-purpose flour in pie crust, what adjustment is typically needed?
- Increase the fat amount
- Decrease the liquid amount
- Add extra liquid to compensate for bran absorption (Correct answer)
- Use less flour overall
Correct answer: Add extra liquid to compensate for bran absorption
The bran in whole wheat flour absorbs more liquid than refined flour, so additional water is needed to achieve proper dough consistency.
Question 5: A pie crust made entirely with vegetable shortening will most likely lack which quality compared to one made with butter?
- Flakiness
- Tenderness
- Rich flavor and color (Correct answer)
- Ease of rolling
Correct answer: Rich flavor and color
Vegetable shortening produces a very tender, flaky crust but lacks the buttery flavor and golden color that dairy fat provides.
Question 6: For a pie crust that needs to hold a very wet custard filling without becoming soggy, which technique best addresses this?
- Using more water in the dough
- Blind baking the crust before adding the filling (Correct answer)
- Using bread flour instead of pastry flour
- Adding baking powder to the dough
Correct answer: Blind baking the crust before adding the filling
Blind baking pre-cooks and sets the crust, creating a moisture barrier that prevents the wet filling from soaking through.
Question 7: What is the role of salt in pie crust dough beyond seasoning?
- It tenderizes the dough by breaking down gluten
- It strengthens gluten structure and enhances flavor (Correct answer)
- It acts as a preservative only
- It helps the fat incorporate more evenly
Correct answer: It strengthens gluten structure and enhances flavor
Salt tightens gluten bonds, giving the crust enough structure to hold its shape, while also enhancing the overall flavor profile.
CPM Flour, Fat & Liquid Selection 3
A baker notices their pie crust shrinks significantly during blind baking.
What is the most likely cause?