Ingredients:
The ingredients for preserving duck eggs, also known as century eggs, include:
- Clay, ash, salt, and quicklime: A mixture of these ingredients is used to preserve the eggs for weeks or months.
- Tea leaves or rice husks: These ingredients are sometimes added to the mixture.
- Sodium hydroxide: This ingredient is used to raise the pH level of the eggs.
The process of preserving duck eggs raises the pH level and changes the flavors of the eggs. The egg whites become gelatinous and dark brown or black, while the yolks become dark green. Century egg have a creamy texture and a salty taste. They are often served with soy sauce or added to congee, a type of rice porridge
