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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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.

Condiments

Mayonnaise

UK guidance

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

Best quick answer

60 days

If opened today

Aim to use by 31 Jul 2026

What that means

This keeps longer, but cold storage and clean handling still matter.

Use this as a planning window, then check the real-world spoilage signs below before eating.

Storage note

Commercial mayo is refrigerator storage after opening in both regions, but brand wording varies a lot. This tracker uses a conservative 60-day window; if the jar gives a shorter instruction or points you to a date code, the label wins.

Check before eating

Look

Darkened streaks, mould, or dried crust around the lid.

Smell

Sharp sour or stale egg smell.

Texture

Split, watery, or curdled texture.

Freezing

No. Do not freeze; emulsion breaks and texture becomes unusable.

UK vs US

UK mode uses 60 days after opening. US mode uses 60 days after opening.

This item is tracked the same way in both UK and US mode.

FSA Guidelines is selected right now.

Source: UK FSA Guidelines & Manufacturer Expectations

Trust and method

TossOrKeep editorial desk

TossOrKeep food storage policy review · Reviewed 1 Jun 2026

Windows are conservative planning ranges built from public UK FSA and US FDA/USDA guidance, then tightened when typical manufacturer labels run shorter.

Cold storage, clean utensils, and label-first handling win over memory or social-media myths.

This page is specific to Mayonnaise. Similar foods in Condiments can still differ.

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Fridge Rescue Pack

If you keep checking foods like Mayonnaise, this turns the advice into a weekly fridge routine with planners, labels, and use-first prompts.

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Keep browsing

category-guide

Condiments: opened shelf-life guide

Also in Condiments

Green Pesto (Jar)

14 days after opening (UK)

Tomato Ketchup

180 days after opening (UK)

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Did you know?

Freezing Mayonnaise at day 59 locks in safety for months.

Source: UK food safety research & TossOrKeep user data

Cut waste further

People checking Mayonnaise usually need better storage, clearer labels, or a more visible fridge setup.

Airtight containers

Better storage helps reduce waste on quick-turn foods like dips and leftovers.

Date labels

Make the opened date visible so the fridge tracker matches the real container.

Fridge thermometer

Useful for longer-life items where stable cold storage matters.

Monetisation note: affiliate tracking is not configured yet, so these links currently act as product suggestions only.