CDRE study materials
CDRE study resources

CDRE cheat sheet

CDRE · Keep the key ideas within reach.

Quick reference

Nutrition and Food Science

  • Energy yield: carbohydrate 4 kcal/g, protein 4 kcal/g, fat 9 kcal/g, alcohol 7 kcal/g; multiply grams by these factors to total kilocalories.

  • AMDR ranges: carbohydrate 45-65%, fat 20-35%, protein 10-35% of total energy intake for adults.

  • Protein RDA for adults is 0.8 g/kg body weight per day; critical-care and burn patients require higher provision, often 1.2-2.0 g/kg.

  • Nitrogen balance: intake nitrogen minus (urinary urea nitrogen + 4 g) estimates equilibrium; positive balance indicates anabolism.

  • BMI = weight (kg) / height (m)^2; underweight below 18.5, normal 18.5-24.9, overweight 25-29.9, obese 30 and above.

  • Fat-soluble vitamins A, D, E, K require bile and micelle formation; malabsorption or steatorrhea raises deficiency risk first for these vitamins.

  • Water-soluble vitamins B-complex and C are not stored appreciably; deficiency signs appear faster and toxicity is rare except for B6 and niacin.

  • Enteral nutrition is preferred when the gut works; parenteral nutrition is indicated when the gastrointestinal tract cannot be used or absorbed.

Quick reference

Food Service Systems and Operations

  • Conventional (cook-serve) system: food prepared and served on site; highest labor cost, shortest holding time, best quality retention.

  • Cook-chill holds food at 0-3 C for up to 5 days; cook-freeze holds at -18 C or below; both require rapid chilling through the danger zone.

  • Sous-vide requires vacuum packaging plus precise time-temperature control; botulism risk rises if anaerobic packaging is temperature abused.

  • Forecasting drives purchasing; a common rule is production quantity = forecasted demand adjusted for past production records and carryover.

  • Ingredient room (issue) inventory method charges food cost when items leave storage; direct charge method charges at receiving.

  • Standardized recipe yield percentage = edible portion weight / as-purchased weight; use it to convert AP to EP quantities.

  • Menu engineering classifies items by popularity and contribution margin into stars, plowhorses, puzzles, and dogs.

  • Labor productivity measures include meals per labor hour and labor minutes per meal; higher meals per labor hour means greater efficiency.

Quick reference

Sanitation, Safety, and Environmental Management

  • Temperature danger zone is 41-135 F (5-57 C); bacteria multiply fastest in this range, so limit time in it to 4 hours cumulative.

  • Two-stage cooling: 135 to 70 F within 2 hours, then 70 to 41 F within an additional 4 hours.

  • Reheating for hot holding must reach 165 F (74 C) for 15 seconds within 2 hours.

  • HACCP has seven principles: hazard analysis, critical control points, critical limits, monitoring, corrective actions, verification, recordkeeping.

  • Handwashing lasts at least 20 seconds with soap and warm water; it is required before food contact and after restroom, raw meat, or waste handling.

  • FATTOM growth factors: food, acidity, time, temperature, oxygen, moisture; pH below 4.6 and water activity below 0.85 inhibit most pathogens.

  • Cross-contamination is prevented by color-coded cutting boards, separate raw and ready-to-eat prep areas, and sanitizer contact time per label.

  • Chemical sanitizer concentrations: chlorine 50-100 ppm, quaternary ammonium 200-400 ppm, iodine 12.5-25 ppm; test strips verify strength.

Quick reference

Human Resource Management and Supervision

  • Maslow's hierarchy orders needs from physiological through safety, social, esteem, and self-actualization; lower needs dominate until met.

  • Herzberg's two-factor theory separates hygiene factors (pay, policy, conditions) from motivators (achievement, recognition, growth).

  • McGregor's Theory X assumes workers avoid responsibility; Theory Y assumes workers seek responsibility and self-direction.

  • Situational leadership adjusts style along directing, coaching, supporting, and delegating based on follower readiness.

  • Span of control is the number of subordinates reporting to one supervisor; wider spans require more standardized, routine work.

  • Progressive discipline follows a sequence: verbal warning, written warning, suspension, termination, with documentation at each step.

  • Turnover rate = (separations during period / average number of employees) x 100; compare against industry benchmarks.

  • Performance appraisal errors include halo effect, central tendency, recency bias, and leniency; behaviorally anchored rating scales reduce subjectivity.

Quick reference

Financial Management and Business Operations

  • Food cost percentage = food cost / food sales x 100; labor cost percentage = labor cost / total sales x 100.

  • Prime cost = food cost + labor cost; it typically represents the majority of controllable operating expense.

  • Break-even sales = fixed costs / (1 - variable cost percentage); contribution margin per unit = price minus variable cost per unit.

  • Inventory turnover = cost of goods used / average inventory value; low turnover signals overstocking or spoilage.

  • Cost of goods sold = beginning inventory + purchases - ending inventory.

  • Straight-line depreciation = (cost - salvage value) / useful life in years.

  • Current ratio = current assets / current liabilities; a value near 2:1 generally signals short-term liquidity strength.

  • Budget variance = actual minus budgeted; favorable means revenue above or expense below budget, unfavorable the reverse.

Quick reference

Regulatory Compliance and Quality Assurance

  • HACCP is mandatory for juice and seafood processors in the US; the FDA Food Code is a model code adopted by state and local jurisdictions.

  • The Food Safety Modernization Act shifted focus to prevention, requiring preventive controls and produce safety standards.

  • Nutrition labeling requires serving size, calories, total fat, saturated fat, trans fat, cholesterol, sodium, total carbohydrate, and protein.

  • Allergen labeling under US law covers the big nine: milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans, sesame.

  • Food additives must be generally recognized as safe (GRAS) or approved; Delaney clause bars carcinogenic additives at any level.

  • Quality assurance is process-oriented and preventive; quality control is inspection-oriented and detects defects after production.

  • Standard operating procedures document repeatable tasks; records must be retained per regulation to support traceability and recall.

  • Inspection vs. audit: regulatory inspections verify legal compliance; internal audits verify conformance to the facility's own plan.

Quick reference

Education, Training, and Professional Development

  • Learning domains: cognitive (knowledge), affective (attitudes), psychomotor (skills); objectives should name the domain and level.

  • Bloom's taxonomy orders cognitive objectives from remember, understand, apply, analyze, evaluate, to create.

  • Adult learning (andragogy) assumes learners are self-directed, experience-rich, problem-centered, and need relevance to practice.

  • Competency-based training defines observable performance standards and assesses learners against them rather than time served.

  • Kirkpatrick's four levels of evaluation: reaction, learning, behavior, results; results level measures on-the-job impact.

  • Demonstration-return demonstration is the standard method for teaching psychomotor food safety skills such as handwashing or thermometer use.

  • Continuing education units: one CEU equals 10 contact hours of approved instruction; licensure renewal often requires a set number.

  • Preceptor and mentoring models pair novices with experienced practitioners; structured orientation shortens time to competence.