What are Century Eggs?

If you’ve ever wondered what are century eggs, the answer lies in their preservation method and cultural history. Originating over 600 years ago during the Ming Dynasty, the century egg was reportedly discovered by accident when a farmer found duck eggs in a slaked lime pool. Upon tasting them, he discovered the uniquely creamy, pungent flavour that has captivated generations. Today, the dish is still considered a delicacy in China, Taiwan, and across East and Southeast Asia.

The century egg taste can be complex and layered. The egg white becomes a dark amber jelly with a slightly salty flavour, while the yolk turns creamy and intense, with hints of ammonia and sulphur. This transformation has led many to refer to it as the black egg Chinese cuisine is famous for.

Traditionally, century egg, or pitan egg, is served as part of a cold appetiser, sliced into wedges and paired with pickled ginger to contrast the richness. It also appears in congee (rice porridge), tofu salads, or minced into steamed pork. Whether enjoyed solo or in a dish, the century egg taste delivers a truly unforgettable experience.

How to Make Century Egg

If you’ve ever been curious about how to make century egg, the process is both a fascinating blend of science and tradition. While the classic approach may seem daunting, modern adaptations make it possible to try at home.

Traditionally, century eggs are made using duck eggs, though chicken or quail eggs can also be preserved using the same method. The preservation mixture includes a blend of wood ash, salt, clay, quicklime, and rice hulls. The eggs are coated in this paste and then rolled in rice hulls to prevent sticking. They are stored in a cool, dark place for 5 to 10 weeks. During this time, the alkaline mixture raises the pH of the egg, causing the proteins and fats to break down and transform. The result is the distinctive jelly-like egg white and creamy, dark yolk that defines a centuries-old egg.

For a simpler method, many home cooks mimic the effect of pitan eggs by soaking eggs in a chemical solution. A typical recipe involves black tea, salt, calcium hydroxide (pickling lime), and sodium carbonate. This process also takes several weeks but is less messy and safer for beginners.

Tips for Safe Preparation

When learning how to make century egg, hygiene and storage are critical. 

• Use clean, uncracked eggs and sterilised containers. 

• Always label the date of preparation and monitor the eggs regularly. 

• Before eating, inspect each egg—if there’s an off-putting odour (beyond the usual pungency), discolouration, or visible mould, discard it. 

The Cultural Significance of the Pidan Egg