To maintain seasoning, lightly rub cooking oil over the entire casserole after drying thoroughly<br />Your casserole has been pre-seasoned prior to shipment from the factory and does not need to be<br />seasoned for the initial use. However, for best results, you may apply a light coating of cooking oil inside the casserole before each use. This will ensure the casserole remains properly seasoned and prevent rusting.<br /><br />Note: Seasoning is a coat of soybean oil baked onto the cast iron casserole at a high<br />temperature, which provides easy-release properties to the casserole. Cooking foods with fat<br />and/or using oil will continue to season the casserole over time.<br /><br />To re-season the casserole, apply a high smoke point cooking oil over the entire surface,<br />then heat in the oven for an hour at 176 ºC (350 ºF). To catch excess oil, place a baking<br />sheet on the oven rack below the casserole. The casserole is ready to use once cooled. <br />You may wipe off any excess oil remaining on the casserole.<br /><br />Please contact help@tramontina-usa.com for any additional support. Thank you.