As chenpi ages, changes in aroma and color become more noticeable. Below are common observation points.
1. Aroma Differences
Natural aging is gradual, and five-year steps often show clearer changes. Ten-year chenpi usually has a more defined aged aroma with less bitterness, while fifteen-year chenpi tends to have a steadier, more restrained scent.
2. Color Differences
With longer aging, the peel color typically deepens. Ten-year chenpi is often light brown on the outer skin with a yellowish-white pith, while fifteen-year chenpi tends to appear darker, with some pith flaking.
Overall, age judgment should combine aroma, color, and storage condition.