Seasoning refers to the process of developing a protective coating on cast iron by applying oil and heat. Thanks to the interior enamel of most of our Classic Dutch ovens, they’re ready to go out of the box...no seasoning required! Our raw cast iron Dutch Ovens, however, come pre-seasoned and will require occasional seasoning throughout their lifetime. Seasoning with Milo Seasoning Oil brings back your Dutch oven’s super non-stick powers and restores its original luster.