Professional quality in black steel, which over time gets a natural non-stick property. Extra thick black steel (carbon steel) of 1.2-3 mm. Handles in steel with steel rivets. Excellent heat -conducting properties. Withstands high temperatures and metal tools. Lighter than cast iron. Made in France. Before use: The forehead has got a layer of beeswax to protect it from rust. Remove this layer with very hot water before using it. Wipe possibly After with kitchen towel. Then cover the bottom with neutral oil and heat on medium heat for approx. 5 minutes. Pour off the oil when cooled and wipe off the excess oil with kitchen towel. Repeat the process once again so it gets a protective layer. Daily cleaning and maintenance: Clean with warm water after use, then dry with a kitchen towel. Then add some oil and wipe it off with a kitchen towel. Store it in a dry place. Do not withstand the soak or dishwasher.