CDM study materials
CDM study resources

CDM cheat sheet

CDM · Keep the key ideas within reach.

Quick reference

Foodservice Systems Management

  • Four production systems: conventional (raw ingredients prepared and served on site), commissary (central production with chilled or frozen distribution to satellites), ready-prepared (cook-chill or cook-freeze produced in advance, rethermalized at service), and assembly-serve (prepared foods purchased, then heated and assembled).

  • Food flows in sequence: purchasing, receiving, storage, issuing, pre-preparation, production, holding, service, and sanitation; each step is a control point for quantity and quality.

  • The menu is the primary control document: it determines purchasing quantities, staffing, equipment needs, production scheduling, and the budget.

  • Popularity index = portions of one item sold / total portions of all comparable items sold; the result drives future production forecasts.

  • As-purchased (AP) quantity = edible-portion (EP) quantity / yield percentage; conversely EP = AP x yield percentage.

  • A cycle menu repeats on a defined interval (for example, every three weeks); a static menu stays the same daily; a single-use menu is planned for one event.

  • Selective menus offer choices (a la carte or free choice); nonselective menus present a fixed meal (table d'hote) with no alternatives.

  • Efficient work-flow design uses straight-line movement, keeps clean and soiled traffic separated, and places production as close to service as possible.

Quick reference

Nutrition and Medical Nutrition Therapy

  • Energy values: carbohydrate 4 kcal/g, protein 4 kcal/g, fat 9 kcal/g, alcohol 7 kcal/g.

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

  • Hamwi ideal body weight: men 106 lb for the first 5 feet plus 6 lb per inch above; women 100 lb for the first 5 feet plus 5 lb per inch above.

  • Mifflin-St Jeor estimates resting energy expenditure from weight, height, age, and sex; indirect calorimetry is the reference measurement when available.

  • Diabetes care is individualized; emphasize carbohydrate from whole foods, fiber about 14 g per 1000 kcal, and sodium under 2300 mg/day.

  • Chronic kidney disease without dialysis: protein about 0.6-0.8 g/kg/day; hemodialysis about 1.0-1.2 g/kg/day; restrict sodium, potassium, and phosphorus as indicated.

  • Enteral nutrition is preferred whenever the gastrointestinal tract functions; parenteral nutrition is used when it does not.

  • Refeeding syndrome shows hypophosphatemia, hypokalemia, and hypomagnesemia; advance nutrition support slowly in high-risk malnourished patients.

  • Drug-nutrient interactions: warfarin versus vitamin K intake, MAO inhibitors versus tyramine, and grapefruit juice inhibiting CYP3A4 metabolism.

Quick reference

Sanitation and Food Safety

  • Temperature danger zone is 41 F to 135 F (5 C to 57 C); TCS food held in it beyond 4 cumulative hours must be discarded.

  • Minimum internal cooking temperatures: poultry 165 F; ground meat 155 F; whole-muscle pork, beef, and fish 145 F with a 3-minute rest.

  • Cooling rule: 135 F to 70 F within 2 hours, then 70 F to 41 F within 4 more hours, for a 6-hour total maximum.

  • Reheating food for hot holding must reach 165 F for 15 seconds within 2 hours.

  • HACCP's seven principles: hazard analysis, identify critical control points, set critical limits, monitor, take corrective action, verify, and keep records.

  • The Big Six pathogens requiring exclusion of the food handler: Shigella, Salmonella Typhi, nontyphoidal Salmonella, E. coli O157:H7, hepatitis A, and norovirus.

  • FATTOM lists the growth requirements: food, acidity, time, temperature, oxygen, and moisture.

  • Handwashing requires at least 20 seconds with water at 100 F or warmer; bare-hand contact with ready-to-eat food is prohibited.

  • Warewashing: wash at 110 F, rinse at 110 F, then sanitize in 171 F water for 30 seconds or with an approved chemical sanitizer at its labeled concentration.

Quick reference

Personnel and Human Resource Management

  • Job analysis precedes two documents: the job description (duties, responsibilities, conditions) and the job specification (education, skills, experience required).

  • One FTE equals 40 hours per week; FTEs = total weekly labor hours / 40. Meals per labor hour = meals served / productive labor hours.

  • Turnover rate = (number of separations during the period / average number of employees) x 100.

  • Herzberg two-factor theory: hygiene factors (pay, conditions, supervision) prevent dissatisfaction; motivators (achievement, recognition, growth) create satisfaction.

  • Maslow's hierarchy runs physiological, safety, social, esteem, then self-actualization; lower needs are addressed before higher ones motivate.

  • Fair Labor Standards Act sets minimum wage, requires overtime at 1.5 times the regular rate beyond 40 hours per week, and limits child labor.

  • Family and Medical Leave Act provides up to 12 weeks of unpaid job-protected leave to eligible employees of employers with 50 or more workers.

  • Progressive discipline order: verbal warning, written warning, suspension, termination, with documentation at every step.

  • Leadership styles: autocratic (leader decides), democratic (group input before the leader decides), and laissez-faire (group decides with minimal direction).

Quick reference

Business Operations and Financial Management

  • Food cost percentage = (cost of food sold / food sales) x 100; a typical foodservice target is roughly 28 to 35 percent.

  • Cost of food sold = beginning inventory + purchases - ending inventory, adjusted for transfers in and out and employee meals.

  • Factor pricing: selling price = food cost / desired food cost percentage, where the pricing factor = 1 / desired food cost percentage.

  • Break-even point in units = fixed costs / (selling price per unit - variable cost per unit).

  • Prime cost = food cost + labor cost; operators typically target prime cost near 60 to 65 percent of sales.

  • Inventory turnover = cost of food used / average inventory value; it measures how many times stock is replaced in a period.

  • Income statement: revenue - expenses = profit. Balance sheet: assets = liabilities + equity.

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

  • Labor cost percentage = (labor cost / total sales) x 100; controllable expenses are those management can adjust in the short run.