No, date labels signal quality more than safety, while “use by” marks safety for certain items when storage rules are met.
Shoppers see a maze of date codes—sell by, best if used by, use by, display until. The terms look official, yet they aren’t standardized for most foods. That gap breeds waste and doubt at home. This guide cuts through the noise with plain rules you can use, so you know when to keep, cook, chill, or toss.
What Each Label Actually Means
Most date codes are the maker’s best guess about peak taste and texture. Safety hinges more on time-temperature control than an ink stamp. Here’s a quick map to decode common wording:
| Label Term | What It Means | What To Do |
|---|---|---|
| Best If Used By | Quality window from the maker; flavor or texture may fade after the date. | Keep if it smells, looks, and tastes normal; rotate to the front to use soon. |
| Use By | For some perishables, the last date recommended for peak safety and quality when stored as directed. | Eat, cook, or freeze by that date; if frozen before the date, keep frozen. |
| Sell By | Stock-control cue for stores, not a discard order for you. | Buy with time to spare; store cold; plan to use or freeze within the usual fridge window. |
| Freeze By | Best time to freeze for top quality. | Freeze before this date to lock in freshness; label the package at home. |
| Display Until | Retailer shelf prompt, not a consumer safety line. | Treat like “sell by.” |
How Reliable Are Date Codes On Groceries?
They’re helpful guides, not absolute truth. Two things matter more: storage and handling. Cold food must stay at 40°F (4°C) or colder, and hot food should pass 165°F (74°C) when reheated. Once a package is opened, the clock changes. Some foods hold up fine past the printed day; others don’t.
Safety Versus Quality, In Plain Terms
Quality fades before safety fails. Stale chips are annoying, not risky. Raw poultry mishandled in the fridge can be risky long before any printed date. Freezing pauses microbial growth and can hold food safe indefinitely at 0°F (-18°C); taste and texture still decline over time, so storage charts use quality-based limits.
When A Printed Date Matters A Lot
There are a few non-negotiables. Infant formula has federally required dating and should not be used after the marked day. Ready-to-eat chilled items that grow listeria—like deli meats and soft cheeses—need extra care. If a package swells, leaks, or smells off, toss it regardless of the calendar.
Smart Home Rules That Beat Confusion
Set The Fridge And Freezer Correctly
Use a fridge thermometer. Aim for 37–40°F (3–4°C) in the refrigerator and 0°F (-18°C) in the freezer. Store raw meat on the lowest shelf in a tray, eggs in the carton on a shelf, and leftovers in shallow containers so they chill fast.
Work The Two-Hour Rule
Perishables shouldn’t sit out longer than two hours, or one hour in heat above 90°F (32°C). Get groceries chilled quickly; divide large pots of soup or rice into smaller portions before refrigeration.
Use Senses With Sense
Smell, look, and texture checks help once you understand limits. Sour milk smell is a clue, but some pathogens don’t signal spoilage. That’s why time and temperature guardrails matter alongside a sniff test.
Open-Versus-Unopened: Why The Clock Resets
Breaking a seal changes exposure to air and microbes. A jar of salsa may last months unopened in the pantry yet just a week or two in the fridge after you crack it. Vacuum packs slow staling, but once opened, moisture loss and cross-contact move faster. Write the open date on lids with a marker so you’re not guessing.
Dairy is a good case study. A sealed carton of ultra-pasteurized milk can sail past the printed day when kept cold. Once you break the seal, oxygen and repeated pouring introduce new microbes. That’s why open milk often tastes tired within a week even if the printed line says longer.
Special Cases Worth Calling Out
Canned Goods
Low-acid cans like beans keep their safety for years if the can stays intact, clean, and rust-free. High-acid cans like tomatoes or fruit keep quality for a shorter span. Any bulge, dent on a seam, spurting liquid, or foul odor is a no-go.
Seafood
Fresh fish is fragile. Buy close to cook day and keep it packed on ice in the coldest fridge zone. If plans change, wrap tightly and freeze the same day. Thaw in the fridge and cook the day it finishes thawing.
Produce
Leafy greens wilt from moisture loss and air exposure. Keep them in breathable bags with a paper towel. Ethylene producers like apples can age nearby produce; store them apart if you notice faster ripening.
Cold Storage Benchmarks You Can Trust
Use these practical ranges for a typical home fridge and freezer. When in doubt, go shorter. Freezing holds safety but slowly dulls flavor and texture.
| Food | Fridge Guide* | Freezer Guide* |
|---|---|---|
| Raw Chicken (Pieces) | 1–2 days | Up to 9 months |
| Ground Beef | 1–2 days | 3–4 months |
| Steaks Or Chops | 3–5 days | 4–12 months |
| Deli Meat (Opened) | 3–5 days | 1–2 months |
| Hard-Cooked Eggs | 1 week | Not recommended |
| Milk (Opened) | 5–7 days | Not recommended |
| Yogurt | 1–2 weeks | 1–2 months |
| Leftovers (Cooked Meat) | 3–4 days | 2–3 months |
| Bread | Room temp 4–6 days | 2–3 months |
| Cheddar | 3–4 weeks | 6–8 months |
*Ranges are quality-oriented and assume safe chill at 40°F/4°C and a freezer at 0°F/-18°C.
Why Dates Vary Across Brands
Makers choose wording based on product style, packaging, and distribution speed. A sealed salad mix might show only a few days of peak texture; a canned soup may carry multiple years because it’s shelf-stable. Without a single national rule for most items, phrasing can differ and still be compliant as long as it isn’t misleading.
How To Shop With Less Waste
Buy For A Plan
Match perishable purchases to a menu. Grab the freshest pack you can reach, but only if you’ll cook it in time. If you need just two chicken breasts, skip family-pack markdowns that will linger.
Rotate At Home
Adopt the store trick: first in, first out. Slide older items forward when you restock. Label freezer packages with the item and date using painter’s tape and a marker.
Lean On Your Freezer
Freeze meats, bread, berries, and cooked grains before they hit the end of their fridge window. Thaw in the fridge, never on the counter. Reheat leftovers to a safe internal temperature. If texture matters—say, for lettuce—freeze isn’t a fit; plan to eat those items first.
Yes, Some Dates Are Safety-Critical
For high-risk, ready-to-eat chilled foods, pay close attention to “use by” language. Listeria can grow at fridge temps, so long holds are risky. Pregnant people, older adults, and those with weakened immunity should be extra cautious with deli meats and soft cheeses unless heated until steaming.
When To Ignore The Calendar And Just Toss
- Bulging cans or jars.
- Broken seals, leaks, or foaming on opening.
- Rancid, sour, or putrid odor.
- Sticky, slimy, or fuzzy surfaces on ready-to-eat foods.
- Reheated food that never reached 165°F/74°C.
The Role Of Standard Language
Public agencies encourage pairing two phrases: “Best if used by” for quality and “Use by” for safety-sensitive items. That twin-term approach trims confusion and helps families keep good food out of the bin. Read the FDA & USDA statement backing that approach.
Simple Decision Tree For Supper Tonight
Step 1: Check Storage
Was it kept cold at or under 40°F (4°C)? If not, skip it. No printed date can rescue hours in the danger zone.
Step 2: Check The Package
Intact seal and normal shape? Keep going. Broken or swollen? Toss it.
Step 3: Check The Food
Normal color, texture, and smell? If yes, compare to the storage chart. If close to the edge, cook now or freeze.
Step 4: Reheat Smart
For leftovers, aim for 165°F (74°C) throughout. Soups should simmer; meats should steam; sauces should bubble.
Myth-Busting Quick Hits
- “Freezing kills germs.” It stalls growth; it doesn’t sanitize. Heat is what finishes the job.
- “Smell alone is enough.” Not always. Some pathogens don’t change odor.
- “Canned food never expires.” Safety can hold for years when intact, but texture and flavor slide.
- “Throw all food past the date.” Many items are fine with sound storage and a quick quality check.
Where These Rules Come From
Food safety agencies publish storage charts and guidance to curb waste and protect health. For day-to-day ranges, see the U.S. cold storage chart.
Practical Takeaway For Everyday Cooking
Date stamps help you rank freshness, not just safety. Pair them with a cold fridge, clean handling, and a quick look-smell-texture check. When the date is safety-linked—like infant formula or high-risk chilled foods—treat it as a hard stop. For the rest, let storage science guide your call and waste less without cutting corners.
Method In Brief
This guide compiles agency charts and labeling notes, then translates them into home steps and two compact tables. Ranges reflect quality guidance for a typical home kitchen, assuming steady cold storage and clean handling. Always follow any recall or safety notice for a specific product.