Oven Calibration & Baking Science Flashcards

A convection oven is used in place of a conventional oven. By how much should the recipe temperature typically be reduced?

Answer: 25°F

Convection ovens circulate hot air more efficiently and typically require reducing the temperature by 25°F compared to conventional ovens.

What is the primary purpose of chilling pie dough before rolling and baking?

Answer: To relax gluten and firm the fat for flakier layers

Chilling allows gluten to relax (reducing shrinkage) and keeps fat solid so it creates distinct flaky layers during baking.

Which oven rack position is generally best for baking a fruit pie to ensure the bottom crust cooks through?

Answer: Lower-third rack

Placing the pie on the lower-third rack brings it closer to the heat source, helping the bottom crust cook fully before the top over-browns.

Why does a custard-based pie (such as pumpkin) crack on top after baking?

Answer: The pie was overbaked, causing proteins to over-contract

Overbaking causes egg proteins in the custard to over-coagulate and contract, creating cracks on the surface.

What is the function of an egg wash applied to the top crust of a pie before baking?

Answer: To promote browning via the Maillard reaction and add sheen

Egg wash provides proteins and sugars that undergo the Maillard reaction when heated, producing a golden, glossy finish.

If a fruit pie filling is too runny after baking, which adjustment to the thickening agent would most likely fix it?

Answer: Increase the thickener amount or switch to a higher-starch agent

Increasing the thickener concentration or using a more effective starch allows the filling to gel properly during baking.

Which factor most directly affects the starch gelatinization temperature in a pie filling?

Answer: Sugar concentration and type of starch used

High sugar concentrations raise the gelatinization temperature of starches, while different starches (cornstarch, tapioca, flour) have varying gelatinization ranges.