Oil spray bottle is a kitchen utensil used to dispense oil in a fine mist. It is typically made of plastic or glass, with a pump-action mechanism that pressurizes the oil and releases it through a nozzle. Oil spray bottles are used in cooking to add a light coating of oil to food, such as vegetables, chicken, or fish. They can also be used to baste food while it is cooking, or to add flavor to popcorn or roasted nuts.