Peanut oil has a shelf life of 18 months, which is well beyond the date when it can be consumed, and is generally not recommended for further consumption.

The shelf life of peanut oil is generally 18-24 months, and unopened peanut oil will have a longer shelf life and can be stored for about two years. And after opening the peanut oil will be in contact with the air, and then be slowly oxidized, thus generating some of the precipitates that are not beneficial to the body, you can use dark glass or opaque material to contain, which can also slow down the speed of oxidation.

The oxidation rate of peanut oil is very fast, because some of the oils and fats in it can easily react with oxygen to produce some other substances that precipitate at the bottom, thus affecting the flavor and health of the peanut oil. If there is a lot of sediment at the bottom of the peanut oil, it means that the peanut oil is oxidizing faster, so try not to eat such peanut oil.

In order to prevent the oxidation of peanut oil, you can add some peppercorns, fennel, cinnamon, cloves and other spices to peanut oil, because spices contain some antioxidants, which can slow down the oxidation of peanut oil. But pay attention to the dosage, or it will affect the flavor of peanut oil.

Peanut oil buying tips

1, color observation method. When buying peanut oil, first observe its color. Pure peanut oil density, thick oil, dark yellow: adulterated peanut oil density is small, thin oil, light yellow.

2, burning method. A piece of paper rolled into a paper tube, immersed in the oil, remove the peanut oil ignition, after burning, such as the flame on the paper tube does not smoke. No small water droplets on the ground, the paper tube does not show blisters, is high-quality peanut oil. If the opposite is true, it is adulterated peanut oil.

3, heating method. Take a small amount of peanut oil and place it in your palm. Combined hands friction a number of times. Pure peanut oil is fragrant, adulterated oil has no obvious flavor.