This lecture covers the manufacturing process of terracotta, starting with the molding of mud bricks and the extrusion of specific shapes. It explains the firing process, including the transformation and vitrification phases, sintering, and the desired qualities of terracotta bricks. The lecture also delves into the chemical and mineral transformations that occur during firing, as well as the composition of Swiss terracotta. Additionally, it discusses the temperature requirements for clay tiles and the role of various compounds in the terracotta composition.