Nine-processed chenpi is usually not made from high-aged Pubei chenpi, mainly due to cost and flavor considerations.
Cost and Processing
High-aged Pubei chenpi is expensive and very dry, which makes it harder to absorb seasonings and increases production cost.
Flavor Fit
As a snack, nine-processed chenpi emphasizes a sweet, mellow taste. Using high-aged peel can make bitterness more pronounced and harder to balance.
Common Raw Materials
Nine-processed chenpi is typically made from fresh or lower-aged citrus peel and processed through multiple steps.