Material: Made from red shale clay, known for durability and excellent heat regulation, often with a terra sigillata coating to improve release. Performance: Excellent for baking crusty bread, mimicking a brick oven. Usage: It is generally recommended to use these pans by putting them into a cold oven to prevent cracking from sudden temperature changes. Origin: Often associated with specialized local pottery (like Tufty/Swain) using local clay in Alfred NY Some scuffs from storage but never been used