How do you know if Olive oil (opened) has gone bad?

Olive oil (opened) has likely gone bad if you notice cloudiness, sediment beyond a chill haze; rancid, crayon-like, or musty smell; greasy, sticky residue around the cap. When in doubt, throw it out.

How Long Does Olive Oil (Opened) Last?

Olive Oil (Opened) keeps 3–6 months in the pantry after opening, according to cited USDA/FDA storage references.

2 cited USDA/FDA/FSIS sources
Editorial review · Verified June 2026

Only storage locations with source-backed entries are shown; a missing freezer or pantry card means FoodLasts does not have a supported value.
Unopened and after-opening tabs are split because the source data has separate entries.

Based on USDA/FSIS guidance:

Refrigerate opened condiments such as mayonnaise and salad dressings; cold storage slows spoilage after opening.

Source

Rancid oil is not dangerous but tastes unpleasant and loses its benefits — discard it once it smells like old crayons or putty.

How to tell if it's gone bad

Look:Cloudiness, sediment beyond a chill haze
Smell:Rancid, crayon-like, or musty smell
Texture:Greasy, sticky residue around the cap

When in doubt, throw it out. If Olive Oil (Opened) smells, looks, or feels off — discard it. Food poisoning is not worth the risk.

Storage tips

Keep olive oil in a cool, dark cupboard with the cap tightly closed; light, heat, and air all turn it rancid. A dark glass or tin bottle protects it best.

Is it still good?

Enter when you bought or opened it and where it's stored.

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How to tell if it's gone bad

Storage tips

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