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

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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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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

Green Pesto (Jar)

UK guidance

Green pesto keeps for around 14 days after opening in both UK and US mode when kept refrigerated and handled cleanly.

Best quick answer

14 days

If opened today

Aim to use by 15 Jun 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

Jarred pesto labels commonly run to about 2 weeks after opening if refrigerated. Use a clean spoon every time and follow the pack if it gives a shorter window.

Check before eating

Look

Dark brown patches, mould, or bubbling on the surface.

Smell

Sour, fermented, or rancid oil smell.

Texture

Separated oil that will not mix back in or a slimy finish.

Freezing

Yes. Freeze in small portions or an ice cube tray for up to 3 months.

UK vs US

UK mode uses 14 days after opening. US mode uses 14 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 Green Pesto (Jar). Similar foods in Condiments can still differ.

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If you keep checking foods like Green Pesto (Jar), 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

Mayonnaise

60 days after opening (UK)

Tomato Ketchup

180 days after opening (UK)

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Did you know?

Room temperature Green Pesto (Jar) spoils 7x faster than refrigerated.

Source: UK food safety research & TossOrKeep user data

Cut waste further

People checking Green Pesto (Jar) usually need better storage, clearer labels, or a more visible fridge setup.

Freezer-safe containers

Useful when the countdown is short and freezing is a good save option.

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.