Stick to small bottles unless you’re heavy-handed. Once opened, olive oil can go rancid in as little as three months (even though the bottle might say it will last longer). Fresh olive oil smells like green, ripe olives and has a bright, peppery taste with a kick; be wary of a crayon- or putty-like odor, which indicates spoilage. Here are some more foods that might expire sooner than you think.
Flip natural varieties upside down to allow the pool of oil near the lid to move through the rest of the jar and make the peanut butter creamier (and to skip messy stirring). Just make sure the cap is screwed on tight to avoid a greasy pantry shelf. Here are some other foods you’ve been storing all wrong.