How to thaw frozen food safely in a restaurant: the four Food Code methods and a thawing log

Somebody forgot to pull the chicken. It's 10:15, lunch starts at 11, and there's a case of frozen breasts on the prep table "just for an hour". That case is the most common thawing mistake there is, and it's an easy one for an inspector to spot.

Thawing looks harmless because the food is cold. The trouble is the outside: it warms up long before the middle lets go. This post covers the four methods the FDA Food Code allows, how to plan pulls (especially for the big roasts and holiday orders), what thawing does to date marking, and a pull sheet and log you can print.

General information, not food safety advice for your specific operation. Your state or local health department enforces its own version of the Food Code and has the final word.

Why it matters

The Food Code's own explanation is short: "Freezing prevents microbial growth in foods, but usually does not destroy all microorganisms. Improper thawing provides an opportunity for surviving bacteria to grow to harmful numbers and/or produce toxins." And if the food is refrozen after that, "significant numbers of bacteria and/or all preformed toxins are preserved" (Annex 3, §3-501.13).

So the rule isn't "thaw it slowly" or "thaw it fast". It's: keep every part of the food out of the danger zone while it thaws.

Quotes in this post are from the FDA Food Code 2022, the model most state and local health departments adopt in some form. The FDA has since published a 2026 edition. We checked every rule quoted here against it: none has changed in substance, though the new edition writes some numbers as words ("four hours", "two days"). States adopt it on their own timetable, so check which version yours enforces.

The four allowed methods

Time/temperature control for safety (TCS) food, such as raw meat, poultry and fish, cooked foods and many dairy items, "shall be thawed" in one of these ways (§3-501.13):

Not on the list: the counter, the prep table, a bus tub of standing water, the top of the oven, a sunny window, or "the walk-in door propped open".

The running-water limits, spelled out

Running water has two time limits, depending on the food:

• Ready-to-eat food: only for a time "that does not allow thawed portions of READY-TO-EAT FOOD to rise above 5°C (41°F)" (¶(B)(3)).
• Raw animal food that will be cooked: thawed portions can't be above 41°F "for more than 4 hours", counting the time in the water and the time to prepare it for cooking, or the time it takes in the fridge to bring it back down to 41°F (¶(B)(4)).

In practice: use it for portions small enough to thaw in an hour or two, check the water with a thermometer, and cook or refrigerate as soon as it's thawed. If you can't keep an eye on it, use the fridge.

Frozen fish in vacuum packs

Some vacuum-packed (reduced oxygen packaged) fish is labeled to keep frozen until use. The Food Code says that fish has to be taken out of the package before it's thawed in the fridge, or before or right after it's thawed under running water (¶(E)). If the label says to remove it from the package before thawing, do that.

"Slacking" isn't thawing

Slacking is letting frozen food warm a little so it's easier to portion or cook, like a block of frozen shrimp you need to separate. The Food Code allows it only "Under refrigeration that maintains the FOOD temperature at 5°C (41°F) or less" or "At any temperature if the FOOD remains frozen" (§3-501.12).

Plan the pulls, especially for big items

Most thawing mistakes are planning mistakes. Nobody chooses the counter; they just ran out of time. Refrigerator thawing takes a while, and big, dense items take much longer than small, flat ones. Build a pull sheet and give it an owner.

The rule of thumb in most kitchens: pull tomorrow's frozen items at tonight's close, onto a labeled sheet pan on the bottom shelf. For whole birds, large roasts, briskets and cases of protein, start days ahead and track them on the sheet.

How long does a 20-pound turkey take in your walk-in? It depends on your cooler, the packaging and how full the shelf is, so time it once and write the number down instead of guessing. Holiday orders are where this matters most: a roast that isn't thawed on the morning of a catering pickup forces a bad choice.

The pull sheet

Put it next to the prep list and check it at every close.

Thawed food and date marking

Thawing restarts the clock that freezing paused. Under the Food Code, ready-to-eat TCS food held for more than 24 hours must be marked with the day it has to be used or thrown away, for a maximum of 7 days at 41°F, with "The day of preparation shall be counted as Day 1" (§3-501.17(A)).

The days before freezing count too. The Food Code's own worked example: "The morning of October 1, a chicken was cooked, then cooled, refrigerated for 2 days at 41°F and then frozen. If the chicken is thawed October 10, the food must be consumed or discarded no later than midnight of October 14" (Annex 7, Chart 4-C). Two days were used before freezing, so five are left after thawing.

So when you freeze prepared food, write the prep date and how many days it's already used. When you thaw it, write a new label with the use-by date. Our grab-and-go labeling post covers date labels in more detail.

Food you cook from thawed raw meat is date-marked from the day you cook it, if you hold it for more than 24 hours: that's its day of preparation.

Refreezing

The Food Code's reason for the thawing rules includes refreezing: if food was thawed badly, freezing it again keeps the bacteria and toxins. Many kitchens keep the simplest house rule: don't refreeze thawed raw protein; cook it or discard it. If you want a different rule for specific items, write it down and ask your health department first.

Mistakes inspectors see

• A case on the prep table or in the sink with the water off
• Food thawing in a bus tub of standing water
• Raw chicken thawing on the shelf above the salad greens
• Thawing on the top shelf of the walk-in, dripping
• Food thawed under running water and then left in the sink
• A thawed item with no date label, or the original frozen date crossed out
• Thawed food refrozen to "save it"

The thawing log

The Food Code sections above don't call for a written thawing log, but some kitchens keep one for running-water thawing, for large items, or after an inspection finding, and your health department may ask for one. It also trains the habit.

Check your thermometer is accurate first; our thermometer calibration how-to takes five minutes.

Your thawing checklist

• [ ] Thawing methods posted at the prep sink and in the walk-in: fridge, running water, cooking, single portion to order
• [ ] Bottom shelf (or a set spot) for thawing, in pans, below ready-to-eat food
• [ ] A pull sheet with an owner, checked at every close
• [ ] Big items timed once in your own cooler and the number written down
• [ ] Running water: under 70°F, running the whole time, food submerged, a thermometer at the sink
• [ ] Thawed ready-to-eat food date-marked, counting the days used before freezing
• [ ] A house rule on refreezing, written down
• [ ] Thawing covered in training for every new cook (see training first hires)

Where Mays fits

• The pull on a schedule. Put "Pull tomorrow's frozen items (see pull sheet)" on the closing checklist, with a Photo answer of the thaw shelf, and a Visibility Window so it shows at close. See Scheduling and assigning checklists.
• A thawing log as a form. Build a custom form under Tasks → Types with an Inventory item or Text field, a Single choice field for the method, Date / time fields for start and done, and a Temperature field with a pass range for the finished product, so a reading above your limit shows Out of range. Every answer lands in Task Data, and Export CSV downloads it. See Building custom forms and Task Data.
• Prep targets. A prep sheet (Inventory → Prep) holds the prep par for each line, so the pull list can follow what tomorrow needs. See Prep sheets.

What Mays doesn't do: there's no thawing timer that alerts you when running-water thawing has gone on too long, and Mays doesn't print date labels.

Pull it the night before

Thaw in the fridge by default, under cold running water when you must, or straight into the cooking. Plan the pulls, give the list an owner, and date the food when it comes out. The case on the counter disappears once someone is responsible for pulling it the night before.

Start your free trial: 30 days, every module, no card needed. Or book a walkthrough and we'll build your closing checklist and thawing log with you.