Nutrition and Food Safety
Nutrients, Allergens, and Hazard Control
Nutrition questions reward precision about macronutrients and micronutrients: calories per gram (carbohydrate 4, protein 4, fat 9, alcohol 7), the difference between soluble and insoluble fiber, and the roles of fat-soluble vitamins (A, D, E, K) versus water-soluble ones. Expect questions on sodium reduction, added sugars, and menu labeling conventions, plus dietary patterns such as vegetarian, vegan, gluten-free, and low-FODMAP. Know that gluten-free is not the same as allergen-free, and that cross-contact is the real risk in shared fryers and prep surfaces.
Food safety is the larger half. The big nine allergens (milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soy, and sesame in the U.S.) must be identified and controlled through separation, dedicated utensils, and staff training. Understand the biological, chemical, and physical hazard categories; the role of time and temperature in bacterial growth; and why spore-formers like Clostridium perfringens and Bacillus cereus survive ordinary cooking. Know the difference between cleaning, sanitizing, and disinfecting, and the concentration and contact-time requirements for common sanitizers.
Traps to Watch
- Assuming freezing kills bacteria; it only pauses growth.
- Confusing allergen cross-contact with cross-contamination by pathogens.
- Forgetting that sesame is a major allergen in current U.S. labeling.
- Treating foodborne intoxication (toxin already present) like an infection with the same onset timeline.
- Misreading calorie math when portion size changes but nutrient density does not.
Rule of Thumb
For a plate costing calories, multiply grams by 4/4/9. A 30 g protein, 45 g carbohydrate, 15 g fat portion is 120 + 180 + 135 = 435 kcal. Show the arithmetic; distractors usually swap a multiplier.