Avoid rancidity by following these steps:

Keep oil in the dark: A closed, dark cupboard is a perfect place to keep the oil.

Keep oil cool: To maintain quality of your favorite oil, store it at a cool temperature and away from the stove or heat producing appliances.

Tight-lid: Air is also an enemy to oil. It is important to ensure that the lid is always tight.

Check the date: Old oil will change in texture and flavour, especially with olive oil.