A restaurant almost never cleans the production kitchen that feeds it. Whether the food comes from the brand's own commissary, run by a team the owner never meets, or from a co-packer that also fills orders for several other brands, cleaning is the part of the operation the restaurant experiences without ever seeing it. Grease left on a wall is invisible to a diner. A drip from an overhead seam into a finished tray is not, and neither is a floor left wet under a rack of ready meals.
The questions below are written for the outsider: a chef, a founder, or a quality lead visiting a kitchen they do not operate. Each one is phrased so it can be checked against something you can see, hold, or request as a record during a single visit. A question that can only be answered with a nod is not a question; it is a formality. Whether the kitchen belongs to your company or to someone else, the list is the same. The only difference is who has to answer it.
Ask for the paperwork before you agree to a visit
A production kitchen that manages cleaning has documents; a kitchen that merely performs cleaning has opinions. Request three things in writing before you book a date, and read them before you walk in.
- The master cleaning schedule: which surfaces and equipment, how often, and who signs each item off. A list without frequencies is a statement of intentions, not a schedule.
- The last three completed cleaning records, not the blank template the binder opens on. Dates, names, and the notes written in the margins are the whole difference.
- The contracts for work the kitchen team does not do itself: hood, filter and duct cleaning; grease and waste hauling; pest control. Ask what scope is written into the hood contract, hoods and filters only, or fans and duct runs as well, because the gap between those two sentences is where grease hides for years.
One more question belongs in the same email: where does grease-laden wash water go, and what does the local drainage authority require of this site? A kitchen that answers that question in one sentence is a kitchen that has thought about water.
Time the visit for the end of a shift
Kitchens look their best early in the morning, before anything has happened. Ask to arrive as production ends, while surfaces are still warm and grease is easy to see. Bring a small flashlight and nothing else.
At end of shift, look at the parts of the room nobody walks past on purpose: the top edges of shelving, the seam where a hood meets the wall, the backs of equipment, the lips of floor drains, the gap between a machine and the floor beside it. The aisle that faces the entrance is the least informative surface in a production kitchen. It is cleaned most and soiled least, and tour routes are built around it. What you want is the surface that faces the wall.
Ask who owns each boundary
Cleaning fails at the seams between responsibilities more often than inside anyone's job. Ask for the room to be divided on paper into three lists: what the kitchen team cleans daily, what it cleans periodically, and what a contractor cleans. Then ask what is on none of the lists.
- Hoods, filters, ducts and extract fans: who cleans them, how often, and what the contract says is included.
- The grease interceptor: a separate responsibility on a separate schedule. Surface cleaning inside the kitchen does not change how often the interceptor needs pumping, and the two are often managed by people who have never spoken to each other.
- Floor drains and traps: who flushes them, and when. Grease that leaves a surface during washing has to be carried somewhere, and the drain is where it either keeps moving or stops for good.
- The spaces behind and under equipment: who moves what, and who is on the floor when it happens.
An honest kitchen will name at least one item that is nobody's job today, together with the plan for it. A kitchen where everything is already covered has usually just never been asked.
Ask how the cleaning frequency was set
There are two ways a frequency gets chosen: a calendar, or the observed return rate of the soil. Ask which one this schedule came from, and ask to be shown the fastest-soiling surface in the room rather than the tour route.
You can read grease in three states without touching anything, and the states tell you whether the schedule is honest. A fresh film moves under a wipe and offers no resistance; heat and a short pass are enough. A polymerised film is dull or tacky with dark edges and does not release until it has been warmed for a while, so it needs repeated short applications of heat rather than one long scrub. A ground-in deposit is gritty and holds solids; no heat moves the solids, and mechanical removal has to come first. A team that can name these states is managing grease. A team that answers "we clean everything every night" is following a calendar and paying for it in either labour or residue.
Then ask the follow-up that separates real schedules from printed ones: when a surface fails a check, does the frequency change, or only the surface?
Ask what touches the food and where the water goes
For food-contact surfaces, ask what is applied, at what strength, how the rinse is verified, and what the rule is when the product changes, especially between menus that share an allergen. These are not audit-theatre questions. They decide what your finished trays carry.
For grease itself, ask how heat is used. Heat and dwell time move polymerised grease; scrubbing force is what a crew pays when heat is missing. Ask what supplies the heat, hot water or steam, and how long it stays on the surface before the surface is wiped. A kitchen that has treated central kitchen degreasing as a process rather than a chore will answer with times and methods; one that has not will answer with effort.
Then follow the water. Ask how much is applied during a wash, where it leaves the room, and what stands between it and the drain. Grease that cools in a horizontal pipe belongs to whoever finds the smell later. Ask what the local drainage authority requires, and whether the answer is written down somewhere the night shift can see it.
Ask about drying as a named step. Floors that must carry carts, and surfaces that must be dry before product returns, are a schedule constraint, not a hope. Near electrical panels and control stations, less free water is the goal, which is why commercial kitchen steam cleaning is worth asking about here: a dry-steam mode leaves far less standing water than a hose. It does not remove all water, though. Any surface cooler than the steam will condense some of its own, so the honest question is not whether water appears but how much arrives and how fast it leaves.
Ask what "clean" is verified by
Ask to see how the kitchen proves a finished job, and read the answer carefully, because there are two very different things people call records.
- Photographs: are they dated, taken from fixed points, and paired before and after? A photo of a clean floor taken from no particular place proves only that the photo was taken.
- Swab testing, if the kitchen runs one: who takes the sample, what the limits are, and what happens when a result fails. Does the line stop, is the surface re-cleaned and re-tested, or is the result simply filed?
- Sign-off sheets: does the signature come after an inspection, or after the cleaning? The difference is one column on the form, and it is usually the column that is missing.
A record says what was found and what was done about it. A receipt says the work was billed. Ask which one you are being shown, and ask for the last three of them.
Ask about the equipment, and ask to see it running
A cleaning schedule that depends on a machine nobody can start is fiction. Ask which machines are in service, when each was last serviced, and who on the team was trained on it. Then look at the machines themselves. A brush worn to threads, a hose repaired with tape, and a nozzle wrapped in a rag are the true schedule, written in the equipment.
If the kitchen you are visiting is evaluating new central kitchen cleaning equipment, a fixed steam unit or anything else, the questions to put to its supplier are specific, and you can ask them alongside the kitchen team.
- Which numbers are measured at the nozzle end rather than the boiler end. A long hose changes what arrives at the surface, and that difference is exactly where the kitchen's work happens.
- Hose and wand lengths, compared against distances measured from the point where the machine will actually stand, not from the nearest wall on the floor plan.
- Preheat time and working time per tank of water, because those two numbers decide whether the schedule can be run as written.
- Which surfaces the manufacturer confirms in writing for kitchen use, and which ones are merely assumed.
Ask what the questions do not reach
A production kitchen can be clean by every standard above and still deliver a problem, because the chain does not end at its door. Ask where the kitchen's responsibility stops and yours begins: the loading of insulated crates, the temperature and time in transit, the condition of the crates themselves, and the receiving dock at your restaurant, where someone sets a tray down on a surface that appears on no list but yours.
Write that handoff down before the first delivery, the same way the kitchen writes its own schedule. The cleanest production kitchen in the city cannot protect a meal after it leaves the building, and most arguments that begin with "the kitchen sent it like that" end the moment both sides look at the same dated record.
The best production kitchens welcome a written question set, because it is phrased in the same language their own teams use: who, what, how often, verified by what. If the answers arrive as records, you are looking at a supplier. If they arrive as adjectives, thorough, meticulous, deep-cleaned every week, you are looking at a brochure. Book the visit for the end of a shift, bring a flashlight, and leave with the schedule and the last three records in hand.
And if you operate a production kitchen and these are the questions being put to you, the equipment side of the answer starts with a written conversation. Describe the surfaces, the schedule you intend to keep, and the room's power, water and drainage, and ask for the numbers a catalogue does not carry. You can contact PowerDe to close those numbers in writing before anything is ordered.
