The difference between 10-year and 15-year chenpi is more than just five years. During aging, chemical transformations and oxidation can influence color, aroma and taste, and market pricing.
Key differences between 10-year and 15-year chenpi
Color changes
Color is the most visible change during aging. As time increases, some components volatilize or transform (such as reduced volatile oils and changes in flavonoids), and the peel oxidizes when exposed to air, so color generally deepens. In most cases, 10-year chenpi appears lighter than 15-year chenpi.
Aroma and taste
With aging, smaller volatile-oil molecules tend to decrease while larger components become more prominent, so the sharpness often softens and the aroma becomes more pronounced. As years increase, the inner pith gradually falls away and bitter compounds decrease, leading to a smoother infusion. It is commonly regarded that 15-year chenpi has lower pungency, milder sour-bitter notes, and a stronger aroma.
Price differences
Older chenpi is typically scarcer. Combined with differences in aroma and taste, 15-year chenpi usually commands a higher price than 10-year chenpi at the same specification, and the price gap can be significant.
Which aging year is more suitable
If you prioritize aroma and taste and have a higher budget, you may prefer older chenpi. If value for money is the main concern, 10-year chenpi is often considered a more balanced choice. In practice, it helps to decide based on budget and personal taste preference.