Preserved duck eggs, also known as century eggs or pidan, are a traditional delicacy with a distinctive dark, translucent appearance and complex umami flavor. These eggs undergo a curing process that transforms the yolk into a creamy, dark green or black paste and the white into a dark amber jelly with intricate crystalline patterns. Rich in minerals and proteins, preserved duck eggs offer a bold, slightly sulfurous taste that complements congee, rice dishes, and Asian appetizers. A small amount adds significant depth to any meal. Store in a cool, dry place and serve chilled or at room temperature for optimal flavor.