ACF CC study materials
ACF CC study resources

ACF CC key terms

ACF CC · Get comfortable with the vocabulary.

Danger zone

The temperature range, roughly 41°F to 135°F (5°C to 57°C), in which bacteria multiply fastest. Keep perishable foods outside this range during storage, preparation, and holding.

Related: TCS foods, HACCP
HACCP

A preventive food safety system that identifies biological, chemical, and physical hazards at specific steps and sets critical limits, monitoring, corrective actions, and records to control them.

Related: Danger zone, Receiving inspection
Cross-contamination

The transfer of harmful microorganisms or allergens from raw or dirty surfaces, hands, or equipment to ready-to-eat food. Prevent it with separation, handwashing, and cleaned and sanitized tools.

Related: Sanitizing, Allergen
TCS foods

Foods that require time or temperature control for safety because they support rapid bacterial growth, such as meat, dairy, cooked rice, cut melons, and leafy greens.

Related: Danger zone, FIFO
FIFO

First in, first out: a stock rotation method in which older product is used before newer deliveries. Label and date containers, and store new items behind existing ones.

Related: Inventory turnover, Receiving inspection
Sanitizing

Treating a cleaned surface or food-contact item to reduce microorganisms to safe levels. It follows washing and rinsing and requires correct concentration, contact time, and temperature.

Related: Cross-contamination, HACCP
Calibration

Adjusting or verifying a thermometer against a known reference, such as an ice-water bath at 32°F (0°C) or boiling water, so readings are accurate.

Related: Danger zone, Receiving inspection
Allergen

A protein in food that triggers an immune reaction in sensitive people. In kitchens, prevent contact with allergens and avoid cross-contact through dedicated tools and clear communication.

Related: Cross-contamination, Purchase specification
Mise en place

French for 'everything in its place': organizing and prepping ingredients, tools, and equipment before cooking so service runs smoothly and consistently.

Related: Standardized recipe, Portion control
Honing

Straightening a knife's edge with a steel or ceramic rod. Honing maintains alignment between sharpenings; it does not remove enough metal to create a new edge.

Julienne

A knife cut producing matchstick pieces about 1/8 inch by 1/8 inch by 2 inches (3 mm by 3 mm by 5 cm). Consistent size helps even cooking and professional presentation.

Related: Brunoise, Chiffonade
Brunoise

A fine dice, often about 1/8 inch (3 mm) square, made by cutting julienne strips into tiny cubes. Used for garnishes, sauces, and fillings where uniform texture matters.

Related: Julienne
Chiffonade

A cutting technique for leafy herbs or greens: stack, roll tightly, and slice into thin ribbons. Sharp knives and dry leaves prevent bruising and discoloration.

Related: Julienne
Blanching

Briefly cooking food in boiling water or hot fat, then stopping the cooking. In vegetables, it sets color and texture; before freezing, it inactivates enzymes that cause spoilage.

Related: Shocking, Danger zone
Shocking

Rapidly cooling blanched or cooked food by plunging it into ice water. This stops carryover cooking, preserves color and texture, and moves food quickly through the danger zone.

Related: Blanching, Danger zone
Emulsion

A stable mixture of two liquids that normally separate, such as oil and vinegar. An emulsifier, plus agitation, disperses one liquid as tiny droplets throughout the other.

Related: Mother sauce
Roux

A cooked mixture of equal parts flour and fat by weight, used to thicken sauces and soups. Cooking time determines color and flavor, from white to blond to brown.

Related: Mother sauce, Slurry
Slurry

A cold mixture of starch, such as flour or cornstarch, and liquid. Stirred into hot liquid, it thickens without lumps; heating gelatinizes the starch.

Related: Roux
Maillard reaction

Browning that occurs when amino acids and reducing sugars react under heat, creating complex flavors and color. It begins at relatively high temperatures and is not the same as caramelization.

Related: Caramelization, Deglazing
Caramelization

The browning of sugars when heated, producing nutty flavors and color without proteins. It differs from the Maillard reaction, which requires amino acids as well as sugars.

Related: Maillard reaction
Gluten

A protein network formed when wheat flour is mixed with water and worked. It gives dough elasticity and structure; overmixing can make baked goods or sauces tough.

Mother sauce

One of five foundational sauces in classical cuisine-béchamel, velouté, espagnole, tomato, and hollandaise-used to build many derivative sauces.

Related: Roux, Emulsion
Reduction

Concentrating a liquid by simmering or boiling it so water evaporates. This intensifies flavor and body, but heat-sensitive ingredients and salt levels need attention.

Related: Deglazing, Mother sauce
Deglazing

Adding liquid to a hot pan to dissolve browned food particles, called fond, left after sautéing or roasting. The resulting liquid adds flavor to sauces, soups, or gravies.

Related: Reduction, Maillard reaction
Portion control

Serving a measured, consistent amount of food to each guest. It supports cost control, nutrition accuracy, and customer satisfaction by reducing waste and variability.

Related: Standardized recipe, Food cost percentage
Standardized recipe

A written formula with exact ingredients, quantities, procedures, yield, portion size, and service details. It helps produce consistent food, control costs, and train staff.

Related: Portion control, Yield percentage
Yield percentage

The usable edible portion of a food after trimming, cooking, or processing, expressed as a percentage of its as-purchased weight. It is used to calculate true portion costs.

Related: As-purchased (AP), Food cost percentage
As-purchased (AP)

The weight or cost of food in the form it is bought, including trim, bones, packaging, and moisture. Recipes and cost cards may need conversion to edible portion.

Related: Yield percentage, Purchase specification
Food cost percentage

Food cost divided by food sales, expressed as a percentage. Operators compare it with a target to judge pricing, purchasing, waste, and menu performance.

Related: Portion control, Menu engineering
Inventory turnover

How many times inventory is used and replaced during a period, calculated as cost of goods used divided by average inventory value. Higher turnover generally means fresher stock and less tied-up cash.

Related: FIFO, Food cost percentage
Menu engineering

Analyzing menu items by popularity and contribution margin to classify them as stars, plowhorses, puzzles, or dogs. The results guide pricing, placement, and menu changes.

Related: Food cost percentage, Portion control
Macronutrient

A nutrient needed in large amounts for energy and body function: carbohydrate, protein, or fat. Alcohol is sometimes included because it supplies energy but not essential nutrients.

Related: Micronutrient, Dietary fiber
Micronutrient

A vitamin or mineral needed in small amounts for health, growth, and regulation of body processes. Deficiencies can occur when menus lack variety or rely on highly processed foods.

Related: Macronutrient
Dietary fiber

Indigestible carbohydrate from plants that supports digestion, satiety, and health. Menus can increase it with whole grains, legumes, vegetables, fruits, nuts, and seeds.

Related: Macronutrient
Purchase specification

A written description of a product's required quality, grade, size, packaging, and delivery terms. It helps buyers compare bids and ensures consistent, safe ingredients.

Related: Receiving inspection, Allergen
Receiving inspection

Checking deliveries against the purchase order and specification for quantity, quality, temperature, damage, and labeling before accepting them. Reject unsafe or noncompliant product immediately.

Related: Purchase specification, Calibration, FIFO
Professionalism

Workplace conduct reflecting skill, integrity, responsibility, and respect. In kitchens it includes punctuality, proper hygiene, teamwork, safe behavior, and accountability for mistakes.

Related: Personal hygiene
Personal hygiene

Practices that prevent food workers from contaminating food, including handwashing, clean uniforms, restrained hair, and exclusion of ill workers from food handling.

Related: Cross-contamination, Professionalism