What happens
Tea is softened with steam, weighed, wrapped, pressed and dried. Compression density affects airflow and opening speed; later storage should remain clean, ventilated and protected from excess moisture, heat and odor.
What it changes in the cup
Time may integrate bitterness, deepen sweetness and develop wood, dried fruit or camphor-like notes, but it can also flatten aroma or reveal storage faults. Starting material remains decisive.
How to observe it
Record production date, batch, storage climate and condition. Sample the outer and inner cake because tightly compressed tea may age unevenly, and inspect for unwanted moisture or odor.
Practical guidance
Record production date, batch, storage climate and condition. Sample the outer and inner cake because tightly compressed tea may age unevenly, and inspect for unwanted moisture or odor.
Identification and caution
Older is not automatically better, and a printed year is not proof of age. Provenance, storage continuity and present cup quality matter more than a large date.