A hard anodized pressure cooker is made from aluminum treated to create a durable, scratch-resistant surface while retaining excellent heat conductivity. To maintain your hard anodized pressure cooker longevity, regular care is essential. Clean with mild soap and warm water, avoiding harsh scrubbers. Periodically season the interior with oil to enhance its non-stick properties. Avoid cooking acidic foods that can damage the surface, and store it properly to prevent scratches and rust. Use wooden or silicone utensils and avoid overheating to protect the non-stick layer. Regularly inspect parts like the sealing ring and pressure valve to ensure safe and efficient operation. Proper care ensures long-lasting performance.