The average shelf life of cooking oil is 18 months, but even after 18 months, it doesn't necessarily mean it's gone bad. If cooking oil goes bad, you can smell it by smelling it.

About the shelf life is not necessarily, because of the different temperatures, oil with different raw materials, different containers, so the shelf life will not be the same, if you buy the oil will be eating for a long time, it is recommended that you do not use the original Shuoji bucket, buy and then poured into the glass bottles, which will double the shelf life time, two years are okay.

Expanded Information:

Preservation:

1, peanut oil

Heat peanut oil or soybean oil in a pot and put in a little peppercorns and fennel. When the oil is cold, pour it into an enamel or porcelain container for storage. In this way, the oil can be stored for a longer period of time without deterioration, and the flavor is particularly fragrant when used for cooking.

2, lard

Lard boiled, while it is not condensed, add a little sugar or salt, stirred and sealed, can be stored for a long time without deterioration.

3, small milled sesame oil

Small milled sesame oil in the storage process is prone to rancidity, loss of flavor. Now introduces the following method: the fragrance oil into a small mouth glass bottle, every 500 grams of oil add 1 gram of refined salt, and then the bottle tightly corked, constantly shaking, so that the salt dissolved, placed in a dark place for 3 days or so, and then the precipitation of the fragrance oil poured into a clean brown glass bottle, tighten the lid, and placed in a sheltered place to save, eat as you take. It is important to note that the bottle containing the oil should not use rubber and other odorous corks.

Baidu Encyclopedia - Cooking Oil