Hong Kong Storage: Wet Storing, Ground-Floor Storerooms, and Where Aged Tea Came From
When it comes to aged pu'er, there's almost no getting around Hong Kong. Many of the aged teas that appear at auction today, such as Haoji and Yinji teas, spent a long time in Hong Kong storerooms.
What Is Hong Kong Storage?
"Hong Kong storage" (gangcang) refers to pu'er stored in Hong Kong that carries the style of Hong Kong storage. Hong Kong Observatory data for 1991–2020 show an average annual relative humidity of about 78%, often 82%–83% in March through May, and it's warm most of the year. Tea kept in this environment changes far faster than in Yunnan.
Why Hong Kong and Pu'er Are So Closely Linked
For most of the 20th century, Hong Kong was one of the most important places for consuming and re-exporting pu'er. Drinking pu'er with dim sum in teahouses was part of daily life, and customers preferred tea with a dark liquor and a mellow taste, neither bitter nor astringent. After 1949, Hong Kong's population grew rapidly, and demand for cheap, long-lasting pu'er was high; from Hong Kong it was also re-exported to Southeast Asia. For the story of pu'er in Hong Kong teahouses, read Hong Kong Teahouses and Pu'er.
What Does "Entering Storage" Mean?
Young raw tea is bitter and astringent and didn't suit teahouse customers. So merchants put the tea into hot, humid storerooms to speed up its transformation, a practice called "entering storage" (rucang). Methods passed down in the tea world include:
- Stacking tea on the ground floor or in basements, relying on ground moisture and dampness to change its color quickly. These storerooms are often called "ground storage" (dicang).
- Stacking it densely with little ventilation to keep temperature and humidity high.
- Some accounts mention sprinkling water to raise humidity, though practices varied.
After a few years, the liquor turned from yellow-green to reddish brown and the bitterness and astringency decreased, and the tea could "leave storage," moved to a drier upstairs storeroom or elsewhere so the smell could slowly dissipate. These details mostly come from merchants' word of mouth, and every storeroom did things differently.
Why Most Early Aged Tea Is Hong Kong-Stored
- The market was in Hong Kong: from the 1950s to the 1980s, large amounts of Yunnan pu'er were sold to Hong Kong and re-exported from there to Southeast Asia, so the tea naturally sat in Hong Kong storerooms.
- Enough time: much of that tea stayed there until after the 1990s, when it was bought by collectors from Taiwan and elsewhere.
- The flow to Taiwan: according to Hong Kong merchants' recollections, ripe tea first entered Taiwan around 1987, and aged teas like Red Label opened up the Taiwanese market around 1993. As aged tea flowed from Hong Kong to Taiwan, the trade came up with the saying "enter storage in Hong Kong, leave storage in Taiwan." See Tuicang: Airing Out Stored Tea and Pu'er and Taiwan.
The eras of Haoji, Yinji, and qizi bing are explained in Haoji, Yinji, and Qizi Bing.
What Hong Kong-Stored Tea Tastes Like
| Aspect | Common features |
|---|---|
| Dry leaf | Dark brown, on the dull side, sometimes with a grayish-white surface |
| Aroma | Aged, woody, herbal notes, often with storage taste or earthiness |
| Liquor | Deep red, chestnut red, colors quickly |
| Taste | Mellow and smooth, little bitterness or astringency, more concentrated layers |
| Spent leaf | Dark brown; heavily wet-stored leaves are darker and stiffer |
Hong Kong-stored tea that was lightly wet-stored and well aired out has a bright red liquor, a full, mellow taste, and very little storage taste; heavily wet-stored tea smells damp and stuffy as dry leaf, and the first few infusions have an obvious storage taste. The difference between storage taste and mold is in Storage Taste, Aged Aroma, and Mold.
Hong Kong Storage Today
In recent years, Hong Kong has also had many storerooms managed with dehumidification and temperature control, producing much cleaner tea. "Traditional Hong Kong storage" or "heavy storage" is sometimes used for the old practice, and "clean Hong Kong storage" for humidity-controlled storerooms. If you buy tea labeled "Hong Kong storage," smelling the dry leaf and checking the spent leaf is more reliable than going by the label. Ways to choose aged tea are in How to Judge Vintage.
Keeping Hong Kong-Stored Tea at Home
Once you bring Hong Kong-stored tea home, open the outer box, keep the cotton paper, and store it somewhere dry, ventilated, and odor-free at a relative humidity below 70% so the storage taste can slowly dissipate. Don't crowd it into the same box as new tea or ripe tea.
FAQ
What is Hong Kong storage? Pu'er stored in Hong Kong and shaped by its hot, humid climate. It changes fast, with a dark liquor and a mellow, smooth taste, often with a storage taste.
What does "entering storage" mean? Putting tea into a hot, humid storeroom to speed up its transformation, so young tea loses its bitterness and astringency and its liquor reddens sooner.
Why is most early aged tea Hong Kong-stored? Hong Kong was a major market and re-export port for pu'er, tea stayed there for decades, and it flowed in large amounts to Taiwan and elsewhere in the 1990s.
What does Hong Kong-stored tea taste like? A deep red liquor, mellow and smooth with little bitterness or astringency, with aged and woody notes; heavily wet-stored tea has storage taste and earthiness.