What does underglaze refer to in ceramic art?

Underglaze refers specifically to a decoration that is applied to ceramic pieces before the application of the final glaze. This technique allows for intricate designs and patterns to be painted or drawn onto the pottery surface before it is coated with a clear or colored glaze. The underglaze can be made from pigments that are combined with a medium, allowing artists to add color and detail that will remain visible after the final glaze is applied and fired in a kiln. This method is popular among ceramicists as it provides versatility and creativity in surface decoration while ensuring that the designs are protected by the glaze during the firing process. The final glaze also enhances the appearance of the underglaze, often creating a glossy finish that highlights the applied artistic work.