Fifteen-year chenpi refers to peel aged for 15 years. If stored properly without dampness or pests, it can remain stable for a long time.
When It Might “Expire”
- Poor storage: dampness, mold, or pests can make it unusable;
- Processed products: items with additives, such as candied chenpi or chenpi snacks, usually have defined shelf lives.
Overall, pure chenpi can be stored long-term under good conditions, while processed products should follow their shelf-life labels.