Length
Definition
How long the flavor and aromatic impression of a tea persist after swallowing. Long-length teas continue to evolve in the mouth and throat for many seconds or even minutes.
Why it matters
Length, sometimes called persistence or finish length, measures the durability of a tea's sensory impression. A short tea fades immediately; a long tea continues to bloom, return, or transform after the liquid has left the mouth. Length is closely tied to leaf quality, terroir, and brewing skill. Old-tree pu-erh, premium yancha, single-bush dancong, and competition-grade Japanese greens are often praised for extraordinary length, with sweetness, florals, or mineral notes lingering for a minute or more. In Chinese tasting tradition, length is often discussed alongside huigan (returning sweetness) and houyun (throat resonance). A great tea is rarely the one with the most intense first impression; it is more often the one that refuses to leave.