Peanut oil does expire and go bad in time. An opened container of peanut oil that is roasted or aromatic can be stored for 2 months.
An unopened container of peanut oil that is aromatic or roasted can be stored safely for 9 months. An unopened container of refined peanut oil can be stored for 1 year, and an opened container of refined oil can be stored for 4 to 6 months.
Peanut oil is often used for deep frying foods because it can reach high temperatures.
Peanut oil is a type of vegetable oil and is commonly used in Asian dishes. This oil has a strong peanut taste and aroma.