Pu-erh storage jar
An unglazed or partly glazed clay jar used for storing pu-erh and other dark tea, where the requirement is the opposite of every other category: the tea has to breathe. Sealing raw pu-erh airtight stops the microbial activity that ageing depends on.
Identity
- Category
- Storage
- Native name
- 陶罐
- Romanised
- tao guan
- Also called
- breathable clay jar
- Material
- Unglazed or partially glazed earthenware
Porous — this changes how it is used
Porous. It takes up a trace of every tea brewed in it and gives some of that back to the next, which is why such a vessel is kept for one tea rather than shared across a shelf.
Porosity is the entire point. The jar permits slow gas exchange while buffering swings in humidity, which is what a sealed container cannot do and a bare shelf does badly.
Where it comes from
Chinese, and now standard practice among collectors in humid and dry climates alike.
Named here rather than presented as generic equipment. The object belongs to a practice, and TeaHQ describes it from the outside.
If you do not own one
A cardboard box in a stable room is a reasonable start and is what most storage actually is. What must be avoided is a sealed bag.
This one is not marked essential. The tea can be made without it.
Tea types it suits
Care and maintenance
Keep away from kitchens and anything aromatic. Pu-erh absorbs odours over years and there is no recovering from it.
Other storages
Sources
This page is TeaHQ synthesis. No external source stands behind the description, the material or the account of how the object is cared for. Where the record names a tradition, that attribution is TeaHQ’s own reading of common practice rather than a citation.
TeaHQ names no maker, brand or shop and has nothing to sell. Nothing on this page should be read as advice to buy the object — the substitute note above exists because owning it is usually optional.
Written comparisons
Where TeaHQ has set this piece of teaware against something it is routinely confused with, and argued the differences out in full.
- Airtight caddy vs breathable pu-erh jar — Storage advice for tea is nearly unanimous — keep out air, light, heat and moisture — and there is exactly one category where following it destroys what you bought the tea for. Dark tea meant to age has to breathe, and sealing it stops the process it was bought for.