A macaron changes fast. For the first day or two in the cooler it gets better, as the filling softens the shell into the chewy center people expect; after that the shells go soft and the fillings dry or weep. Buttercream and ganache fillings keep them in the fridge, not on a warm counter, and frozen macarons keep for months. In the example below, a Kansas City macaron bakery's refrigerated boxes passed every test through day 8, and they say best by 6 days, a 25% margin. Below is what ends a macaron's shelf life, how storage changes it, the study, the date on the label, and a free template.
The short version
- Macarons improve for a day or two, then the shells go soft.
- Keep them refrigerated, in airtight boxes.
- Bring them to room temperature before serving.
- Freeze filled macarons for months.
- Run a real-time study and leave a margin before the date.
- The date is a best-by: quality, not safety.
- 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 |
|---|---|---|
| Soft shells | Shells absorb moisture from the filling and go soggy | Fillings with less water; airtight boxes; cold storage |
| Drying | Shells and filling dry in an open box | Airtight boxes |
| Filling | Buttercream and ganache soften or weep when warm | Refrigerate; serve at room temperature |
| Smells | Shells pick up fridge odors | Airtight boxes |
Making them by the hundred is in how to make macarons in bulk, and pricing a box in how to price macarons.
How it's stored
| Stored | In the example's tests | On the label |
|---|---|---|
| Airtight box, refrigerated | Passed every test through day 8 | Best by 6 days |
| Airtight and frozen | Passed after 3 months frozen and 2 days thawed in the fridge | Frozen stock dated 3 months |
| Room temperature | Fillings soft by day 2 in a side study | "Keep refrigerated; serve at room temperature" |
Cafés take boxes refrigerated and set out only what they'll sell that day.
An example: a shelf life study
Petite Lune Macarons, the made-up macaron bakery in Kansas City, Missouri, I use in these examples, kept airtight boxes of six from one batch in the cooler and opened one at each pull:
| Test | Pass if | Day 0 | Day 2 | Day 4 | Day 6 | Day 8 | Day 12 |
|---|---|---|---|---|---|---|---|
| Texture score, 1 to 9 | at least 6 | 8 | 9 | 9 | 8 | 7 | 5 |
| Taste score, 1 to 9 | at least 6 | 8 | 9 | 9 | 8 | 7 | 6 |
| Soggy shells, 1 to 5 | at most 2 | 1 | 1 | 1 | 2 | 2 | 3 |
| All pass? | Pass | Pass | Pass | Pass | Pass | Fail |
Everything passed through day 8; the scores rose for the first two days as the macarons matured, and at day 12 the texture fell below 6. Taking a 25% margin off day 8 gives 6 days. How the pulls and margin are planned is in shelf life testing.
The date on the label
A macaron's date is a quality date, "Best by", with "Keep refrigerated" beside it. In California, food made from July 1, 2026 that shows a date uses "BEST if Used by" for quality, in sell by date law, and how to write the date is in best by date format. The year's numbers are in macaron business plan.
Get the template
Download the macaron 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 box. Eight flavors, boxes at two cafés, an event order frozen ahead, and a wedding next month: someone has to date each batch, keep the frozen stock apart, and send the oldest boxes 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 macaron 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 café 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 café | 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.