Fryer oil log: filter, top off, test and change, with a cost check and the rules on teens and hot oil (free template)

Fryer oil is one of the few ingredients you pay for and then use for days. Change it too late and the fries come out dark, greasy and tasting of yesterday's fish. Change it too early and you pour money down the grease bin. Most kitchens decide by eye, and each cook's eye is different.

A log fixes that: the same daily routine, the same test, a clear rule for when to change, and a record that shows what the oil really costs you. This post gives you the routine, the log, a cost check, and the rules that do apply to fryers, such as which teens may use one.

General information, not legal advice. Follow your fryer's and your oil supplier's instructions; they come first. Grease disposal rules are local, so check with your city or sewer authority.

The daily routine

Write the routine on the station's closing checklist and on the line check, so it doesn't depend on who's closing.

When to change it

There's no federal rule that says how often. Pick a test and a rule, and use them every day:

The rule, written down: "Change the oil when the strip (or meter) reads ___, or when any two other signs show, whichever comes first." Post it at the fryer. A cook who isn't sure asks the manager before service, not after.

What you fry matters as much as how long: breaded and battered items, fish, and salty or wet foods break oil down faster than plain fries. If you can, keep one fryer for fries and one for breaded and fish items.

The oil log

One line per fryer per day.

Read it once a week. If one fryer needs a change every three days and the other lasts six, look at what goes into it and whether it's being filtered.

The weekly cost check

All figures below are hypothetical; use your own invoice prices.

Then try one change: filter every day instead of every other day, or move fish to its own fryer, and compare four weeks before and after. Put the result in your food cost and menu pricing numbers, because oil is part of the cost of every fried item.

Used oil: storage and pickup

• Let it cool before you drain or carry it. Hot oil is a burn waiting to happen, and for 14- and 15-year-olds it's against federal law (below).
• Store it in the renderer's covered bin or a closed container, away from the back door's walkway, with the lid shut.
• Never down the drain or the mop sink. Your city may have its own rules for grease traps and used oil.
• Keep the pickup receipts with your vendor order guide contacts, in case the city asks.

Teens and fryers: the federal rules

Under the Fair Labor Standards Act's child labor rules, 14- and 15-year-olds may cook only in limited ways. Cooking is allowed "with deep fryers that are equipped with and utilize a device which automatically lowers the baskets into the hot oil or grease and automatically raises the baskets from the hot oil or grease", and the same paragraph says it "does not authorize cooking with equipment such as rotisseries, broilers, pressurized equipment including fryolators" (29 CFR 570.34(c)).

For cleaning and filtering, they may "remove oil or grease filters, pour oil or grease through filters, and move receptacles containing hot grease or hot oil, but only when the equipment, surfaces, containers and liquids do not exceed a temperature of 100 °F" (570.34(i)). In practice: no filtering a warm fryer at close, and no carrying the oil.

States often add their own limits. Our state pages on hiring minors (for example, Florida) list them.

Shared fryers and allergens

If the same oil fries breaded chicken, fish and fries, the fries aren't free of wheat, egg, fish or whatever else went in before. Mark shared-fryer items on your allergen matrix, and follow your allergy ticket procedure for guests who ask. Changing the oil doesn't make a shared fryer allergen-free.

Where Mays fits

• The routine on the checklist. Add the opening and closing fryer checks to the kitchen's templates: a Number answer for the probe reading, Multiple Choice for Filtered / Topped off / Changed, and a Photo of the sample jar. See Creating a checklist template.
• The oil log as a form. An admin builds an Oil log form under Tasks → Types with Temperature, Number, Yes / No and Single choice fields; the answers land in Task Data, and Export CSV shows how many days each batch of oil lasted. See Building custom forms and Task Data.
• An alert on a bad reading. Under Insights → Alerts & Reports, an admin can set a Task Form Field Threshold alert on a top-level number field in that form, such as the meter reading. See Alerts and scheduled reports.
• Teens kept off the fryer. Under Scheduling → Positions, tick Filtering, pouring or carrying hot oil or grease above 100 °F and Cooking other than on an electric or gas grill with no open flame, or a fryer that lowers and raises its baskets automatically for the fry station. At a location with minors' rules on, a minor under the position's age scheduled there gets a warning, and the auto-scheduler won't put them there. See Scheduling minors.
• Oil on the order. Add your oil as an inventory item with its jug size and vendor price, count it with the weekly count and order it to par. See Inventory items and Stock counts.

What Mays doesn't do: there's no record per fryer (model, service history, oil changes), and no used-oil pickup log, so keep those in the form and your files.

A rule, a log and a look each week

Filter every day, test the same way, change on a written rule, and read the log once a week. You'll fry better food, spend less on oil, and nobody under 16 will be carrying it.

Start your free trial: 30 days, every module, no card needed. Or book a walkthrough and we'll set it up with you.