Food Preparation and Culinary Skills
Food Preparation and Culinary Skills tests heat transfer, cooking methods, ingredient function, safety, and standard technique. Strong answers explain why a method works, not just what to do.
Heat and technique
- Conduction transfers heat by contact (pan to food); convection moves heat through air or liquid (oven, boiling); radiation transfers energy by waves (broiling, microwaving).
- Moist-heat methods include boiling, steaming, poaching, and braising; dry-heat methods include roasting, baking, grilling, and sautéing.
- Coagulation sets protein (eggs, meat); gelatinization thickens starch with heat and water; caramelization browns sugars; the Maillard reaction browns proteins and sugars.
- A roux uses equal weights of fat and flour; a slurry uses cold liquid and starch.
Baking and emulsions
Gluten develops when flour is hydrated and worked; overmixing muffins or quick breads makes them tough. An emulsion disperses fat and water with an emulsifier-egg yolk lecithin stabilizes mayonnaise. Keep components at similar temperatures and add oil slowly.
Worked example
A white sauce recipe uses 2 tbsp butter and 2 tbsp flour for 2 cups milk. To make 3 cups, scale by 1.5: use 3 tbsp butter and 3 tbsp flour. Cook the roux until bubbly but not browned; add milk gradually, whisking, then simmer to gelatinize the starch. Adding all the milk at once can cause lumps.
Traps
- Believing searing “seals in” juices-it browns and adds flavor, but moisture loss continues.
- Slicing meat immediately instead of resting it.
- Overmixing batters or adding salt directly to yeast.
- Washing raw poultry, which spreads bacteria.