Olive oil doesn't spoil like milk, but it does fade, and eventually it goes rancid. The good news is that a few simple habits keep it tasting fresh.
The three enemies: light, heat, and air
- Light speeds up oxidation. Choose dark glass or tin and store it in a cupboard.
- Heat ages oil quickly. Don't keep it next to the stove, on a sunny windowsill, or above the oven.
- Air (oxygen) is the slow thief. Keep the cap on tight and move oil to a smaller bottle as you use it.
Where to keep it
A cool, dark pantry or cupboard, ideally around 57–70°F (estimate based on common guidance), is perfect. The refrigerator isn't necessary and can make oil cloudy and thick. It clears again at room temperature.
How long does olive oil last?
- Unopened: Small California producers commonly use a "best if used by" date of up to 24 months from production, assuming good storage. Flavor is at its best in the first months after harvest.
- Opened: Aim to use it within about 2–3 months (estimate). Unfiltered oil is best used a little sooner.
- Gallons: Decant a week or two's worth into a small dark bottle and keep the big container sealed and cool.
How to tell if olive oil has gone bad
Smell and taste a little. Rancid oil smells like crayons, putty, or stale nuts and tastes greasy and flat. Rancid oil won't make you sick in small amounts, but it won't taste good and has lost much of what makes extra virgin special.
What about sediment?
Unfiltered oils like ours may form a little sediment at the bottom. That's normal. Pour gently and leave the last bit if you prefer.
Buy fresh, use it often. Shop small bottles →