Fresh bone broth is a perishable, cooked food that keeps only days in the fridge, so most broth makers sell it frozen. Frozen, it keeps for months; what ends it there is freezer burn, ice crystals and the fat slowly going rancid. Once a customer thaws a jar, it's back to a few days in the fridge. In the example below, a Duluth broth maker's frozen jars passed every test through day 240, and they say best by 180 days frozen, a 25% margin. Below is what ends bone broth's shelf life, frozen against thawed, the study, the date on the jar, and a free template.
The short version
- Bone broth is perishable: sell it frozen, or with a short date.
- Cool it fast before it's jarred.
- Frozen, it keeps months; freezer burn and rancid fat end it.
- Thawed, a few days in the fridge.
- Run a real-time study, frozen, and leave a margin.
- Print "Keep frozen" and how long it keeps once thawed.
- TaroStack gives every batch its date from the shelf life you set. More below.
What ends its shelf life
| What ends it | What happens | What slows it |
|---|---|---|
| Freezer burn | Dry, pale patches where air touches it | Full jars with the right headspace; tight lids |
| Rancid fat | Fat oxidizes slowly even frozen | Lift the fat cap before jarring; steady 0°F |
| Ice crystals | Thaw and refreeze swings in the freezer | A freezer that holds 0°F; no door left open |
| Thawing | Back to a perishable food | "Use within 5 days of thawing" |
Cooling a 40-gallon kettle in time is in how to make bone broth in bulk, and the year's numbers in bone broth business plan.
How it's stored
| Stored | In the example's tests | On the label |
|---|---|---|
| Frozen jar at 0°F | Passed every test through day 240 | Best by 6 months frozen |
| Thawed in the fridge | Not part of the study | "Use within 5 days of thawing" |
| Fresh, never frozen | Not sold that way | Jars go into the freezer the day they're filled |
The thawed-jar line is the maker's instruction, cautious on purpose; broth is a cooked meat product once it's thawed.
An example: a shelf life study
North Shore Broth Co., the made-up broth maker in Duluth, Minnesota, I use in these examples, kept frozen 24-ounce jars of beef broth from one run at 0°F and thawed two at each pull:
| Test | Pass if | Day 0 | Day 60 | Day 120 | Day 180 | Day 240 | Day 360 |
|---|---|---|---|---|---|---|---|
| Flavor score, 1 to 9 | at least 6 | 9 | 9 | 8 | 7 | 6 | 5 |
| Freezer burn, 1 to 5 | at most 2 | 1 | 1 | 1 | 1 | 2 | 3 |
| Rancid fat odor, 1 to 5 | at most 2 | 1 | 1 | 1 | 2 | 2 | 3 |
| All pass? | Pass | Pass | Pass | Pass | Pass | Fail |
Everything passed through day 240; at day 360 the flavor fell below 6 and freezer burn showed. Taking a 25% margin off day 240 gives 180 days, six months frozen. How the pulls and margin are planned is in shelf life testing.
The date on the label
Frozen broth carries a quality date, "Best by", with "Keep frozen" and how long it keeps once thawed. In California, food made from July 1, 2026 that shows a date uses "BEST if Used by" for quality or "USE by or Freeze by" for safety, in sell by date law, and how to write the date is in best by date format.
Get the template
Download the bone broth shelf life study template. One sheet: the product, the lot tested, the day it was made, how it's stored and the margin to leave; then each test with its limit and the result at each pull. It marks each pull pass or fail, finds the last day everything passed, takes the margin off, and gives the shelf life for the label and the date for a batch made today. It's an ordinary Excel file with no macros, and it works in Google Sheets, LibreOffice and Numbers.
Where this stops working
The study gives one date for one broth. Beef and chicken broth, runs every week, jars in two co-ops' freezers and the farm's own: someone has to date each run and send the oldest jars first.
How TaroStack does it
TaroStack gives every batch its date from the shelf life you set, and sends the oldest out first.
Dates from the shelf life. Each broth carries its shelf life in days, and each batch's lot gets its production date and the date that follows from it.
First-expired-first-out. Orders take the oldest lots first by default, and a co-op can be set to take only stock with enough days left.
What's coming up. A forecast shows what will expire unsold and what it costs, and anything thrown out is recorded with its reason, expired or spoiled, so waste shows by item.
| The job | Spreadsheet | In TaroStack |
|---|---|---|
| The date on a batch | Worked out by hand | From the shelf life, on the lot |
| Which batch goes out first | Dates on tape | First-expired-first-out |
| Stock with enough days for a co-op | Checked by hand | The customer's shelf-life rule |
| What expired last month | Not counted | Waste by reason |
Lots, dates, first-expired-first-out and the expiry forecast are on every plan, from $49 a month. The first 30 days are free, with no credit card. If you'd like a hand setting up, ask, and we'll do it with you.