Reading the date on a food package as a safety date is the natural thing to do. But how much margin is left depends on which date it is. This article answers three things — how many days changed, whether you can eat past it, and what to look at in front of the fridge.
1. How many days. The old distribution date sat at 60–70% of the quality-safety limit; the consumption date sits at 80–90%. On MFDS's own example, fresh noodles with a 10-day limit go from 6–7 days to 8–9 — two extra days on the same packet.
2. So can you eat past it? The opposite. The margin is what got spent. MFDS writes plainly: “do not eat a product past its consumption date.” And the date only holds “where the stated storage method is observed.”
3. What to look at. Check which date it is first — both still appear on shelves. Chilled milk keeps the old distribution date until 2031, and if the 0–10℃ chilled range was broken, the date tells you nothing.
Korea and the United States designed this date in opposite directions. Korea puts the safety margin inside the date; the US leaves it outside the date and hands the judgment to the shopper.
Korea's sobi-gihan (consumption date) is set at 80–90% of the quality-safety limit.
The older yutong-gihan (distribution date) was 60–70% of the same period.
— Korea Ministry of Food and Drug Safety (MFDS) · Center for Children's Foodservice Management, guidance on the consumption-date labelling system
Those two ratios are the point of this article. They tell you what arithmetic produced the date you look at every day.
Korea's dates are points two and three of four
The MFDS material marks four points on a food's timeline, in a fixed order.
| Order | Point | How it is set | Who it is for |
|---|---|---|---|
| ① | Manufacture / packing date | the start | — |
| ② | Distribution date (유통기한) | quality-safety limit × 0.6–0.7 | a seller-centred label |
| ③ | Consumption date (소비기한) | quality-safety limit × 0.8–0.9 | a consumer-centred label |
| ④ | Quality-safety limit | the point where taste and quality change sharply, fixed by testing | — |
The worked example in the material makes it click.
“If fresh noodles keep their quality for 10 days, the distribution date is 6–7 days and the consumption date 8–9 days.”
— MFDS guidance
The same bag of noodles could carry either date. Before the change it read 6–7 days; now it reads 8–9. The noodles did not change — the fraction you cut at did.
The two definitions, verbatim
Consumption date — “the period during which consumption causes no safety problem, provided the storage method shown on the food is observed” (health functional foods included)
Distribution date — “the period, from the date of manufacture, during which distribution and sale to the consumer is permitted”
— MFDS guidance
Notice that the distribution date's definition never mentions eating. It is the period in which selling is permitted — which is why the material calls it “a seller-centred label.” A date that fixed how long a shop may sell had been read as how long we may eat.
And the consumption date carries a condition: “provided the storage method shown is observed.” Break that condition and the date guarantees nothing.
| Storage type | Required temperature |
|---|---|
| Refrigerated | 0–10℃ |
| Frozen | −18℃ or below |
| Room temperature | 1–35℃ |
But “once the date passes” is the opposite of the US line
The MFDS cautions are blunt, in one line.
“Do not eat products past their consumption date.”
— MFDS guidance, cautions on adopting the consumption-date system
Whereas the USDA Food Safety and Inspection Service (FSIS) writes this.
“Except for infant formula, if the date passes during home storage, a product should still be safe and wholesome if handled properly until spoilage is evident.”
— USDA Food Safety and Inspection Service, Food Product Dating
They look contradictory, but they describe the same structure from opposite ends.
| Korea | United States | |
|---|---|---|
| The safety margin is | inside the date (80–90% of the limit) | outside the date (the date marks quality) |
| So once it passes | “do not eat” — the margin is already spent | “safe until spoilage is evident” — margin remains after the date |
| Who judges | the system calculates it for you | the consumer looks at the food and decides |
| Labelling requirement | a labelling system (in force 1 January 2023) | not required by federal regulation except infant formula |
So the two countries' dates cannot be read the same way. A Korean consumption date is the final line, with the margin already taken; a US “Best if Used By” is a quality mark that was never about safety.
The four US labels — only one is a safety date
| Label | FSIS source text | A safety date? |
|---|---|---|
| Best if Used By/Before | “indicates when a product will be of best flavor or quality.” | “It is not a purchase or safety date” |
| Sell-By | “tells the store how long to display the product for inventory management.” | “It is not a safety date” |
| Use-By | “the last date recommended for the use of the product while at peak quality.” | “except for when used on infant formula, it is not a safety date” |
| Freeze-By | “indicates when a product should be frozen to maintain peak quality.” | “It is not a purchase or safety date” |
Sell-By and Korea's distribution date are the same animal. FSIS defines Sell-By as “how long to display the product”; MFDS defines the distribution date as “the period during which distribution and sale is permitted.” Both countries had a shop's date — and Korea chose to convert it into a consumer's date.
Milk waits another eight years
The rollout schedule has one exception.
| Category | Applies from | Why |
|---|---|---|
| Most foods | 1 January 2023 | — |
| Milk products (refrigerated) | 1 January 2031 | to allow improvement of the cold chain (10℃ → 5℃) and related work |
That single line explains the condition above. A consumption date only holds “provided the storage method is observed,” and the refrigerated standard is currently 0–10℃. For something as temperature-sensitive as milk, you cannot stretch the date while assuming 10℃ — so eight years were set aside to bring the chain down to 5℃.
The scope has a caveat too: it applies “to products manufactured, processed, or loaded aboard ship for import on or after the effective date.” Which is why the material notes that “the two date types will coexist for some time.”
So read it this way
| Step | What to check | Basis |
|---|---|---|
| ① See which date it is | 소비기한 or 유통기한 on the pack — both are still in circulation | MFDS |
| ② If it is a consumption date, that is the line | “Do not eat products past their consumption date” | MFDS |
| ③ Keep the storage method first | chilled 0–10℃ / frozen −18℃ or below / ambient 1–35℃ | MFDS |
| ④ Milk may still carry the old date | refrigerated milk applies from 2031 | MFDS |
| ⑤ Read US labels differently | Best if Used By and Sell-By are not safety dates | FSIS |
Questions that remain
Why didn't food spoil the moment the distribution date passed?
Because that date sits at 60–70% of the quality-safety limit. In the material's own example — noodles with a 10-day quality period — the distribution date was 6–7 days, leaving roughly three days before the limit. That holds only if the storage method was kept, and it is not an invitation to rely on the margin.
Then is a little past the consumption date fine?
No. The MFDS material states plainly: “do not eat products past their consumption date.” That date is already pushed out to 80–90% of the limit — it is the last line, and the slack that existed behind the distribution date is largely gone.
Won't a longer date mean more food waste?
The material argues the opposite. Among the listed effects is “less food waste discarded merely because the distribution date passed, cutting unnecessary spending and carbon dioxide emissions.” Labelling how long it is edible rather than how long it is sellable means fewer perfectly good products binned.
What about imported goods carrying US labels?
For US-labelled products, the FSIS line is “safe if handled properly until spoilage is evident,” with infant formula the exception. How Korean labelling rules apply to imported goods was not verified here.
What counts as “handled properly”?
The FSIS page uses the phrase without giving temperatures or times. The Korean material, by contrast, does give numbers — 0–10℃, −18℃ or below, 1–35℃.
The distribution date is how long a shop may sell; the consumption date is how long you may eat. The first sits at 60–70% of the safety limit, the second at 80–90%. The margin shrank because the date got more honest — which is exactly why you don't eat past the consumption date.
Sources
- Korea Ministry of Food and Drug Safety (MFDS) — guidance material on the consumption-date labelling system (distributed by the Center for Children's Foodservice Management; the material itself credits “Source: Ministry of Food and Drug Safety”). Source for the definitions of both dates, the safety factors (quality-safety limit × 0.6–0.7 = distribution date, × 0.8–0.9 = consumption date) and the 10-day noodle example (6–7 / 8–9 days), the four-point order, the 1 January 2023 effective date and the “manufactured, processed or loaded for import on or after” scope, the 1 January 2031 date for refrigerated milk and its reason (cold chain 10℃→5℃), the storage temperatures, “do not eat products past their consumption date,” the note that both date types will coexist, and the three stated effects. This is agency guidance, not the regulation text, and mfds.go.kr and foodsafetykorea.go.kr remained unreachable, so the statutory wording was not cross-checked.
- USDA Food Safety and Inspection Service (FSIS) — Food Product Dating. Source for “except for infant formula, product dating is not required by Federal regulations,” the infant-formula Use-By requirement, the four label definitions with their “not a safety date” qualifiers, and the “safe and wholesome if handled properly until spoilage is evident” sentence.
- US Department of Agriculture — Food date labeling infographic, used to cross-check the label categories.
Where to check further
- The notice text itself. The Korean figures above come from agency guidance material, not the provision — mfds.go.kr and foodsafetykorea.go.kr do not open. The National Law Information Centre does carry the Act on Labelling and Advertising of Foods, which covers the labelling duty side.
- Consumption-date lengths by product. The only worked example in the material is fresh noodles. MFDS publishes “reference values” by product category on the Food Safety Korea portal — faster than reasoning from the ratio.
- Which label wins on imported food carrying a US date. Not established here. The MFDS imported-food portal or the food complaints line (1399) can answer it.
As of July 2026. The Korean figures come from MFDS guidance material and the US label definitions from USDA source text. For kitchen damp and mould see the monsoon mould guide; for an upset stomach, the gastroenteritis guide. Packing medicines for a trip is covered in the travel medicine guide, and fridge running costs in the electricity calculator. This is general information and does not replace a judgment about a specific food. If you suspect something has spoiled, don't eat it.
