Reference
Glossary
The words that turn up on a permit application, a set of plans, or a vendor quote and are never explained. Each one says what it means and, more usefully, why an operator should care.
- Acidified food / low-acid canned food
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A low-acid food is one with a finished equilibrium pH above 4.6 and a water activity above 0.85. An acidified food is a low-acid food with acid or acid foods added — salsa, pickles, pickled vegetables, some puddings.
Why it matters: These are the categories that quietly exclude the products people most often want to make at home. A cottage food operation may not process either one, and a licensed operation making them needs a process authority and a filed scheduled process. If you are planning a salsa business, this definition is the whole planning problem.
- Air gap / backflow prevention
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A physical vertical separation between a water supply outlet and the flood rim of a fixture, preventing contaminated water being drawn back into the potable supply. Where an air gap is impractical, a mechanical backflow preventer is used and tested.
Why it matters: Indirect drains and air gaps are specifically checked on plan review drawings, and a hose lying in a mop sink is a classic on-the-spot finding.
- Ambient temperature rating
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The maximum surrounding air temperature a piece of refrigeration is built to work in, published in the manufacturer’s specification sheet for that specific model.
Why it matters: It is why a reach-in should not live beside a fryer. Ohio does not prohibit the placement, but it does require equipment to have the capacity to hold food at temperature — so an overheated box becomes a violation the day it cannot pull 41°F. Running past the rated ambient also shortens compressor life and is a standard warranty exclusion.
- Approved source
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Food must come from a regulated, inspected supplier. Home-prepared food, uninspected meat, and foraged items generally cannot be served.
Why it matters: This is why a chef cannot bring in something they made at home, and why that farmer with no license is a problem however good the tomatoes are.
- Bare-hand contact
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Touching ready-to-eat food with bare hands. Generally prohibited — you use gloves, tongs, deli paper, or another barrier.
Why it matters: The inspection expectation is not that you own gloves but that every station where ready-to-eat food is handled has a workable way to avoid bare hands. Walk each station and ask how the person there will actually do it.
- Booster heater
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A small dedicated water heater that lifts incoming hot water to the sanitizing rinse temperature a high-temperature dish machine needs, usually 180°F or more at the manifold. It sits between the building hot water supply and the machine.
Why it matters: Most building water heaters run around 120–140°F, so a high-temp machine almost always needs one, and it is a frequent omission from equipment quotes. Boosters draw significant power, and they are a common reason a build discovers late that it needs a heavier electrical service.
- Commissary
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A licensed food service operation — often a restaurant, grocery, or shared kitchen — that a mobile or temporary operator works out of for prep, water, and waste disposal.
Why it matters: Cleveland requires pushcarts to work from one and to begin and end each working day there, with a signed agreement in place annually before a mobile license is issued. It is a prerequisite, not paperwork you handle later.
- Conditional employee
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Someone who has been offered a food-handling job but has not started working with food yet. Ohio gives them their own reporting duties and their own bar to clearing them.
Why it matters: A conditional employee who reports a reportable symptom or diagnosis must be precluded from becoming a food employee until they meet the return criteria — which is why the illness reporting agreement belongs in the onboarding packet, signed before the first shift rather than handed out during it.
- Cottage food production operation
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A person producing non-potentially-hazardous foods from a defined list in their own home. Exempt from ODA licensing and inspection, restricted to sales within Ohio, and required to label every unit including the statement “This Product is Home Produced” in ten-point type.
Why it matters: It is the cheapest legal way to start selling food in Ohio — no license, no fee, no inspection. The catch is that the permitted list is a closed boundary rather than a set of examples, and acidified foods like salsa and pickles are specifically excluded.
- Critical violation
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A violation directly linked to the risk of foodborne illness — temperature control failures, improper cooking, cooling or reheating, contamination, and similar. Distinguished from non-critical violations, which concern maintenance and general sanitation.
Why it matters: Critical findings drive follow-up inspections and, if repeated, enforcement. Repeat criticals are also the point at which bringing in a food safety consultant stops being optional.
- Data plate also: machine data plate, nameplate
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The manufacturer-affixed plate on a warewashing machine listing its design and operating specifications — wash, rinse, and sanitizing temperatures, sanitizing rinse pressure, and conveyor speed or cycle time. Ohio requires every warewashing machine to carry one, easily accessible and readable.
Why it matters: Ohio requires the machine to be operated in accordance with its data plate, which makes the plate — not the number in the code — your operating standard. If the plate says 185°F and the code floor is 180°F, 185°F is what you must hit. On a used machine a missing plate is a real problem rather than a cosmetic one: there is no documented specification left to operate to.
Ohio Administrative Code 3717-1-04.1 — equipment design and construction
- Date marking
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Refrigerated ready-to-eat TCS food that you prepared, or opened from a commercial package, and are holding more than 24 hours must be marked with the date by which it is used, sold, or discarded — a maximum of seven days, counting the day of preparation or opening as day one.
Why it matters: Day one is the day you made it, not the day after. That single detail is the source of a great many date-marking violations.
- Drainboard
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The landing surface on either end of a warewashing sink or machine. Ohio requires drainboards, utensil racks, or tables large enough to hold everything soiled and everything cleaned that accumulates during service.
Why it matters: A three-bay sink wedged between two walls with nowhere to land a rack gets flagged at plan review, and it makes the dish station unworkable regardless. Both ends need the space, and it has to appear on the drawing.
- Employee illness reporting agreement also: employee health policy, reporting agreement
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A signed acknowledgement that an employee has been told which symptoms, diagnoses and exposures they must report to the person in charge.
Why it matters: Ohio requires employees to be informed of the reporting duty "in a verifiable manner." Verbal instruction is real instruction but it is not verifiable months later, so a signed form in the file is the only version you can hand an inspector. It costs nothing and its absence is the most common gap on this topic.
- Exclusion and restriction
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The two levels of removing a sick employee from work. Restriction limits what they may do — typically no exposed food, clean equipment, utensils, linens or unwrapped single-service items. Exclusion means they may not work in the operation at all.
Why it matters: The code uses these precisely and the trigger differs: the five reportable symptoms require restriction, while a diagnosis of one of the thirteen named pathogens requires restriction or exclusion under the Ohio Department of Health communicable disease rule. Using them interchangeably is how operators end up either over-reacting or, worse, keeping someone on the line who should be home.
- Flow of food
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The path food takes through an operation — receiving, storage, prep, cook, hold, serve — and the layout principle that it should move in one direction, with clean and soiled paths crossing as little as possible.
Why it matters: It is the commercial equivalent of the residential work triangle, and it is what to test a floor plan against. Trace a dirty plate from the dining room to the dish pit: whatever clean food it passes over is a design problem that no amount of staff procedure will permanently fix.
- FSO and RFE also: food service operation, retail food establishment
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The two Ohio retail food license types. A Food Service Operation prepares and serves food in individual portions for immediate consumption. A Retail Food Establishment sells food for preparation or consumption elsewhere.
Why it matters: If you do both, the category with the greater sales volume decides which license you hold. A market with a hot deli and a restaurant with a retail cooler can land on either side of the line.
- Grease interceptor also: grease trap
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A vessel that separates fats, oils, and grease from kitchen wastewater before it reaches the sewer. Sized to the fixtures and flow it serves.
Why it matters: Its location and capacity are a required item on health department plan review drawings, and an undersized or absent one is a major build-out cost. Cleaning it is a separate service from used cooking oil collection, and the pumping generates manifests you keep on file.
- HACCP plan
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A written food safety plan identifying hazards at each step of a process and the controls for them. Required in Ohio for specialized processes, alongside a variance from the Ohio Department of Health.
Why it matters: Needed for reduced oxygen packaging including sous vide, curing meats, and acidifying food to render it non-TCS — which is what sushi rice is. It is written, submitted, and approved, so it belongs early in your schedule.
- High risk / low risk (mobile)
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Mobile licenses use two tiers rather than four. Low risk means holding and selling pre-packaged food only. High risk means cooking, reheating, assembling, or otherwise controlling temperatures — and includes mobile catering.
Why it matters: If you cook, assemble, or reheat anything on the unit, you are high risk. Low risk is a narrow category for selling sealed packages, not a reward for a simple menu.
- High-temp / low-temp dish machine also: hot water sanitizing machine, chemical sanitizing machine
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The two ways a commercial dish machine sanitizes. High-temp uses a hot water rinse, normally with a booster heater. Low-temp uses a chemical sanitizer and runs cooler, with a wash solution that may not fall below 120°F.
Why it matters: It looks like an equipment choice and is really a build choice: high-temp changes your electrical service, low-temp adds a permanent chemical line item. Decide before the deposit, because reversing it later touches both plumbing and power.
- Highly susceptible population
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People more likely than the general population to experience foodborne illness — the group served by hospitals, nursing homes, assisted living, preschools and similar facilities.
Why it matters: Serving one raises the bar in several places at once. Among them: a conditional employee who reports certain outbreak or household exposures is precluded from becoming a food employee, where an ordinary restaurant would not have to act on exposure alone.
- Home bakery
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A licensed and inspected baking operation in the operator’s own residence, using one ordinary household stove or oven. Ohio Department of Agriculture license, $10 a year.
Why it matters: The step up from cottage food, and the dividing line is refrigeration: a home bakery may make cheesecakes, cream pies and custard pies, and may distribute outside Ohio. The inspection list is short but two items end the conversation for many households — no carpet in the kitchen and no pets in the home.
- Irreversible registering temperature indicator also: max-registering thermometer, dish temperature label
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A maximum-registering thermometer or heat-sensitive label that records the highest temperature a surface reached. Ohio requires one to be provided and readily accessible in any hot water mechanical warewashing operation.
Why it matters: The standard for a hot water dish machine is a 160°F temperature at the utensil surface — not the reading on the gauge on the front of the machine. The two disagree more often than operators expect, usually because of low rinse pressure, overloaded racks, or a scaled rinse arm. This device tells you which number is true, and it costs very little.
Ohio Administrative Code 3717-1-04.6 — sanitizing of equipment and utensils
- Major food allergen
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The nine foods federal law requires to be declared by name on a label: milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans, and sesame. The specific type of tree nut, fish, and shellfish must be named.
Why it matters: Sesame became the ninth under the FASTER Act, effective January 1, 2023, and plenty of published guidance — including one of Ohio’s own fact pages — still lists eight. An undeclared allergen is the labeling error that actually hurts someone, and it is the most common cause of recalls reported as serious health risks.
- Make-up air
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Replacement air supplied to the kitchen to balance what the exhaust hood pulls out. An exhaust system moving air out needs air coming back in, conditioned and delivered so it does not disturb the hood’s capture.
Why it matters: An unbalanced kitchen is a permanent problem, not a snag: doors that will not open, pilot lights going out, the hood failing to capture smoke, and heating bills that never make sense. It is also a common thing to find missing or undersized in a cheap second-generation build.
- Manager Certification in Food Protection also: Level Two, Level 2 certification, CFPM
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Ohio’s advanced food safety credential, satisfying the demonstration-of-knowledge requirement. Completing it requires passing a nationally accredited Certified Food Protection Manager exam. Formerly called Level Two.
Why it matters: This takes real study and a proctored exam, so it belongs in your opening schedule rather than your opening week, and the course must be completed within one year of the exam date or it does not count. Two things catch growing operators: the designated person must work primarily in that facility, and one person cannot be the designated manager-certified person for more than one location.
- NFPA 80
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The standard covering fire doors and other opening protectives, including an annual inspection and testing requirement for rated fire doors and rolling fire shutters.
Why it matters: Entirely separate from anything the health department checks, and most operators do not know it applies to them until an inspector asks for the records.
- NFPA 96
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The national standard for ventilation control and fire protection of commercial cooking operations. It governs how hoods, ducts, and fans are built, and how often the exhaust system must be cleaned.
Why it matters: Your fire inspector and your insurer both work from it. When a hood cleaner says they clean "to NFPA 96", they mean bare metal through the whole system — hood, horizontal duct run, and fan — not just the filters.
- NSF-listed also: NSF International, NSF certified
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Equipment certified by NSF International against public health and sanitation standards — materials that clean properly, no harbourage points, joints and finishes that hold up to commercial washing.
Why it matters: Health districts expect commercial equipment to be listed by an accredited body. A residential-grade or unlisted unit can fail plan review even if it works perfectly, which is a common and avoidable way to lose money on a used-equipment bargain.
- Ohio Building Code (OBC)
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The statewide construction code your building department works from, including what construction documents must show and when they are required — new construction, alterations, installing building equipment, and a change of occupancy.
Why it matters: A change of occupancy alone can trigger a full document submission, which surprises people converting a shop or an office into a food operation with no structural work planned.
- Ohio Department of Agriculture (ODA) also: Division of Food Safety
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The state agency that licenses food processing, home bakeries, wholesale bakeries, dairy, and meat and poultry. Its Division of Food Safety is the counterpart to your local health district, which handles retail.
Why it matters: The split is by who you sell to, not what you make. Sell direct to the person eating it and you are licensed by a health district. Wholesale to stores, restaurants, or across state lines and you are ODA. Plenty of people build a retail kitchen and then discover their growth plan needs a different agency.
- On-the-job training (OJT)
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A federally funded program reimbursing part of a new hire’s wages while you train them to full productivity, administered locally through OhioMeansJobs.
Why it matters: The agreement has to be in place before the employee’s first day. There is no retroactive fix, which is why most operators never claim it.
- Person-In-Charge (PIC) Certification in Food Protection also: Level One, Level 1 certification
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Ohio’s entry-level food protection credential, required for at least one person on site at all times during operation at risk level I, II, III and IV operations initially licensed after March 1, 2010. Formerly called Level One. There is no proctored exam — you complete an approved course.
Why it matters: Count your shifts, not your staff — someone certified has to be present every hour you are open, and a manager-certified person on site satisfies it. Operations licensed before March 2010 are exempt until implicated in an outbreak or cited for failing to maintain sanitary conditions, at which point every person in charge needs it.
- Plan review
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The health district’s review of scaled drawings and your menu before you build or extensively remodel. Approval is required before a license is issued.
Why it matters: The clock only starts once the submission is complete, so a missing drawing means the clock never started. Change of ownership triggers it too, even with no construction — the facility has to meet current code.
- Reduced oxygen packaging (ROP) also: vacuum packaging, cook-chill, sous vide
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Any process that reduces the oxygen in a package — vacuum packing, cook-chill, and sous vide among them.
Why it matters: A specialized process in Ohio: it needs a variance from the Ohio Department of Health and a HACCP plan before you may use it. Sous vide is not a technique you can simply adopt because the equipment is cheap.
- Registered design professional
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An architect or engineer registered in Ohio. Construction documents submitted to a building department must bear their seal.
Why it matters: It means you cannot hand a building department a contractor sketch or a kitchen supplier layout. This is a distinct hire from whoever designs your dining room, and separate again from the health department plan set.
- Risk level (I–IV)
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The classification your health district assigns based on the highest-risk activity on your menu. Level I is pre-packaged, non-TCS only; Level IV is multi-step preparation where temperature control prevents bacterial growth.
Why it matters: It sets your annual license fee and your inspection profile, and it is driven by a single worst-case item — one menu addition can move your whole operation up a level.
- Second-generation space also: 2nd gen
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A space that was previously a restaurant and still has usable kitchen infrastructure — hood, make-up air, grease interceptor, adequate gas and electrical service.
Why it matters: The largest single cost variable in opening. A second-generation space versus raw retail can be a six-figure difference, and it is decided the day you sign the lease.
- ServSafe
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The National Restaurant Association’s food safety training and certification program, and the most widely used route to a Certified Food Protection Manager credential in the United States.
Why it matters: A brand of training, not a legal requirement in itself. What Ohio requires is the certification, and ODH approves fourteen online manager courses of which ServSafe is one. Worth knowing when someone quotes you a price for "ServSafe" specifically, or when cost or scheduling pushes you toward one of the other thirteen.
- SSOP also: sanitary standard operating procedures
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Written sanitation procedures for protecting food from contamination before, during, and after a process.
Why it matters: Submitted alongside a HACCP plan when you request a variance. Writing them is the part people underestimate.
- TCS food also: time/temperature control for safety, potentially hazardous food
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Food requiring time and temperature control for safety — the foods that grow pathogens if held in the danger zone. Meat, poultry, fish, dairy, cooked rice and pasta, cut melon and leafy greens, and more.
Why it matters: Nearly every risk level decision turns on whether you handle TCS food and what you do to it. Cooking, cooling, and reheating TCS food is what puts an operation at the top of the risk scale and the top of the fee schedule.
- Temperature danger zone
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Between 41 °F and 135 °F, the range where bacteria multiply fastest — in some conditions doubling in as little as twenty minutes.
Why it matters: Almost every temperature rule on an inspection form exists to move food through this range quickly or keep it out of it entirely.
- Three-tier system
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The structure separating alcohol producers, wholesalers, and retailers. Retailers buy from licensed wholesalers rather than direct from producers, and Ohio grants wholesalers exclusive franchise territories by brand.
Why it matters: It means you largely do not choose your beer distributor. Your address and the brands you want determine who can sell to you — a retail permit holder may not buy a brand from a wholesaler whose territory does not cover the premises.
- Two-stage cooling
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The required way to cool hot TCS food: from 135 °F to 70 °F within two hours, then from 70 °F down to 41 °F within a further four — six hours total, with the first two being the hard part.
Why it matters: Improper cooling is one of the most commonly cited critical violations anywhere. A deep container of hot stock in a walk-in will not make the first stage, which is why ice wands, shallow pans, and ice baths exist.
- Type I hood also: grease hood, Type 1 hood
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An exhaust hood built to collect and remove grease-laden vapors and smoke. Required over any appliance that produces grease or smoke — fryers, ranges, griddles, broilers, charbroilers. It carries listed grease filters, grease-rated ductwork, and a fire suppression system.
Why it matters: This is the single most expensive thing that either exists in your space or does not. A Type II hood — steam, heat, and odor only, as over a dishwasher — needs no grease filters and no suppression, and is therefore far cheaper. If your menu involves grease, a Type II will not do and no amount of arguing changes that.
NFPA 96, Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations
- Type II hood
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A general exhaust hood for steam, heat, odors, and products of combustion — no grease. Typically over dishwashers and some ovens. No grease filters and no fire suppression required.
Why it matters: Much cheaper than a Type I, and sometimes proposed to save money on a build where a Type I is actually required. Confirm which one your equipment lineup calls for before anyone prices it.
- UL 300
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The standard for wet-chemical fire suppression systems over commercial cooking equipment. Systems built to older, pre-UL 300 designs are no longer considered adequate for modern high-efficiency appliances and vegetable-oil frying.
Why it matters: If you inherit a kitchen with a pre-UL 300 system, expect to replace rather than service it — and changing your appliance lineup under an existing hood can require the system to be re-engineered, because nozzles are placed and sized per appliance.
- Variance
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Written approval from the Ohio Department of Health to use a process the food code otherwise restricts. Requires step-by-step written procedures and sanitary standard operating procedures.
Why it matters: Paired with a HACCP plan for specialized processes. Not something to discover after the menu is printed.
- Zoning permit / exemption letter
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Municipal or township confirmation that your intended use is permitted at that address — or a letter confirming no zoning permit is needed.
Why it matters: Frequently a prerequisite for the building permit rather than a parallel step: some building departments will not issue until the zoning permit or exemption letter is already in hand. Start zoning first.
Missing a term you hit somewhere on this site or on a form? Tell us and we will add it. Undefined jargon on a site that exists to explain things plainly is a bug.