Opened food shelf-life

How long does opened food actually last?

Check a food, compare UK and US guidance, and save the day you opened it so you can stop guessing at the fridge door.

Stop guessing at the fridge door. Search a food, compare safety guidance, and save the opening date to your digital fridge.

12+ foods FSA Guidelines Local fridge tracker

Popular searches

1. Search

Type the food you actually have.

Sauces, leftovers, dips, cheeses, and staples are all fair game.

2. Compare

See the shelf-life window and spoilage signs.

The page explains what to look for, smell for, and feel for before eating.

3. Track

Save the opening date to your fridge list.

You get a simple countdown without accounts, forms, or app installs.

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Fridge Rescue Pack

Digital bundle for households trying to waste less food this week.

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Retention Loop

Get helpful reminders for the food you open.

Get a weekly digest of what needs to be eaten in your fridge before it goes bad. No spam, just less food waste.

Get a weekly digest of what needs to be eaten in your fridge before it goes bad. No spam, just less food waste.

item-support

Mayonnaise: signs it should be thrown out

Use this guide to move from broad storage planning into exact item-level shelf-life checks.

Why this page exists

Built for high-intent safety searches and click-through from social.

UK examples in this group average around 32 days after opening.

US examples in this group average around 32 days after opening.

Cold storage, clean utensils, and re-sealing matter more than vague memory-based fridge guesses.

Trust and method

Who reviewed this

TossOrKeep editorial desk

TossOrKeep food storage policy review

Reviewed 1 Jun 2026

How this page was built

Built from UK FSA guidance, US FDA/USDA guidance, pack wording patterns, and manufacturer expectations where labels are stricter.

Built to help compare opened foods before jumping into exact item pages.

Closest tracked examples on this page: Mayonnaise, Salsa.

Related exact food pages

Condiments

Mayonnaise

Commercial mayonnaise keeps much longer than chilled dips, but pack guidance varies. TossOrKeep uses a conservative 60-day refrigerated window after opening.

UK 60d | US 60d

Dips

Salsa

Opened salsa is region-aware in TossOrKeep: 3 days in UK mode and 4 days in US mode, with spoilage signs shown clearly.

UK 3d | US 4d

Related guides

category-guide

Condiments: opened shelf-life guide

Category has 3 indexed items and 3 recent hot results.

category-guide

Condiments: what to use first after opening

Good retention page for condiments users deciding what to finish first.

category-guide

Condiments: fridge mistakes that waste food

Built for social sharing and practical waste-reduction hooks.

category-guide

Condiments: UK vs US opened-food guide

Supports geo-specific search intent and comparisons.

Keyword target

mayonnaise bad signs

Use this guide when

  • You know the general food group but not the exact product yet.
  • You want a planning shortcut before clicking into a specific item page.
  • You need a shareable landing page for social posts and outreach.

FAQ

How should I use this Mayonnaise: signs it should be thrown out guide?

Start with the broad planning advice here, then click into a specific food page for an exact after-opening window.

Are all mayonnaise: signs it should be thrown out foods the same after opening?

No. For example, Mayonnaise has its own storage window and spoilage signs, so always check the exact item page when possible.

What matters most after opening?

Keep the item cold, use clean utensils, reseal it fast, and watch real spoilage signs before eating.