REFRIGERATE IT: Sesame, yes; others, no
AT FRESHEST: Coconut oil—2 years in a cool, dark, dry place
Vegetable oil— Unopened, 1 year; opened, 2 months
Olive oil— Unopened, 2 years from harvest date; opened, 3 months
Sesame/flavorful nut oils— Unopened, 1 year; opened, 2 months
OPTIMAL STORAGE: All oils should be stored in a cool, dark, dry place.
For best quality, buy olive and vegetable oils in small quantities that you’ll use within a couple of weeks. If you do buy larger amounts, transfer what you need for a week or two in the kitchen into a small, opaque bottle, and store the rest in a cool, dark place to minimize exposure to heat and light, then refill your small bottle as needed.
Coconut oil is a solid at room temperature and generally lasts longer than other oils.
Sesame oil and other flavorful nut oils are very sensitive and should be bought in small quantities and kept in the refrigerator after opening (but brought to room temperature before using).
FREEZING: Not beneficial/not recommended, though some products such as fresh herbs can be frozen in oil.
USE IT UP/REVIVAL: If oil begins to get rancid, it can still be put to good use. You can use it to polish and condition both wood furniture and leather shoes (wipe down the surface with a sponge to remove dust and grime, allow to dry, and then apply a light coat of olive oil, rubbing to allow the oil to fully soak in); to fix squeaky doors (use a rag to apply oil to the top of a problematic hinge); or to free stuck zippers (dab some olive oil on the zipper teeth).
Olive oil and coconut oil can be used to make homemade salt or sugar body scrubs.