Iron egg

Iron egg is a special version of soy egg, a snack from Taiwan. They are considered a delicacy and originated in the Tamsui District of New Taipei City. The dish consists of small eggs that have been repeatedly stewed in a mix of spices and air-dried. The resulting eggs are dark brown on the outside, chewy in texture, and very flavourful compared to standard boiled eggs. It has been said to taste "sweet, spicy and slightly salty with a concentrated egg flavour—a great snack with drinks". Iron eggs were popularized by shopkeeper Yang Bi-yun (楊碧雲), who opened the first store selling the product in Tamsui in 1980. She claimed her eggs were invented by accident when, on a slow day at her snack stall, she had to continually recook soy eggs (滷蛋) to keep them warm after taking them out of the soy sauce broth.

Description: Wikipedia — Iron egg, CC BY-SA 4.0