On Tamsui Old Street, bags of gleaming black eggs, slightly smaller than regular hen's eggs, hang in front of the stalls. Pick one up — it's dense and carries a braising fragrance. Bite into it and find an unexpected chewiness — somewhere between a braised egg and a preserved fruit. This is Tamsui's iron egg, a local street food that originated on Tamsui Old Street. Together with Tamsui agei and Tamsui fish ball soup, it forms the "Three Treasures of Tamsui" and has become a classic Taiwanese travel souvenir.
What is a Tamsui iron egg?
Iron eggs are ordinary chicken or quail eggs that are repeatedly braised and then air-dried through multiple cycles of "braise, dry, braise, dry," causing the eggs to shrink, the egg whites to grow increasingly tough, and the braising liquid to penetrate ever deeper. The traditional method takes 3 to 5 days, during which the eggs shrink to about half their original size, the color progresses from light brown to deep black, and the texture transforms from an ordinary braised egg to a dense, firm chewiness. One bite delivers the savory sweetness of the braising liquid first, then the springy chew of the egg white, and finally the smooth richness of the yolk — layers far richer than a standard braised egg, with a more concentrated flavor.
The origin of Tamsui's iron egg is said to lie with early Tamsui Old Street vendors who had unsold braised eggs that kept braising in the pot, shrinking smaller and smaller, accidentally becoming a signature item. A-Po Iron Egg is the founding name most associated with this story and has become one of the most iconic souvenir brands on Tamsui Old Street. Among the Three Treasures of Tamsui — agei, fish ball soup, and iron egg — agei and fish ball soup must be eaten fresh, but only iron eggs keep well and travel easily, which is why they are the most commonly purchased souvenir as visitors leave Tamsui. From the MRT station exit to the riverfront, the density of iron egg shops along Tamsui Old Street is high, with flavors ranging from original to spicy to licorice — browsing and comparing is part of the experience.
How to eat them like a local
Local knowledge
Verified credentials (sponsored content filtered out)
- Iron eggs are a local Tamsui street food, originating from the accidental discovery that braised eggs keep shrinking the longer they are cooked.
- A-Po Iron Egg is the founding name of Tamsui iron eggs and has had a presence on Tamsui Old Street for several decades.
- Iron eggs, agei, and fish ball soup are collectively known as the "Three Treasures of Tamsui" and are Tamsui's representative souvenirs.
Visitor tips
- Iron eggs have a relatively high sodium content. People with high blood pressure or kidney conditions should not consume them in large quantities.
- Tamsui Old Street draws very large crowds on weekends. Drivers should park in more distant lots or take the MRT.
- Iron eggs are extremely chewy. People with dental issues or young children should cut them into smaller pieces before eating.
Information compiled from the Michelin Guide, New Taipei City Tourism and Travel Bureau, and large volumes of public reviews, with sponsored content filtered out. Photos will be replaced with exclusive channel footage after Dio's on-site shoot.