How to Store Pu'er at Home: A Practical Guide for Taiwan's Climate

Pu'er is a tea that "keeps changing." Stored well, its flavor grows rounder and rounder; stored poorly, it can pick up odors or absorb moisture. With Taiwan's humid climate, storing pu'er calls for paying attention to a few extra things.

Four Principles of Storage

1. Dry

Humidity is the single most important factor affecting pu'er. The China Tea Marketing Association recommends storage conditions of 20–25°C and 55%–75% relative humidity. During Taiwan's plum rain season and summer, indoor humidity often exceeds 75%, so take extra care at those times:

• Keep tea in the drier rooms of your home, away from bathrooms and kitchens.
• In humid seasons, run a dehumidifier to keep indoor humidity below 70%.
• Don't place tea directly on the floor or against a wall, since walls and floors are more prone to dampness.

2. Ventilated

Pu'er needs to "breathe," but it doesn't need a breeze. A spot with good air circulation, but not in a direct draft, is ideal.

3. Away From Light

Direct sunlight spoils tea's aroma and makes the temperature swing up and down. Keep tea in a cabinet or box where sunlight can't reach it.

4. Odor-Free

Tea leaves absorb odors readily. Keep pu'er away from:

• Kitchen cooking fumes, seasonings, and spices.
• Mothballs and fragrances in closets.
• Chemical smells like perfume, cleaning products, and paint.
• Rooms with cigarette smoke.

Where to Keep It

• A tea cabinet or bookcase: a wooden cabinet or bookcase that isn't opened often and has no odors is the most common choice.
• Cardboard boxes: clean, odor-free cardboard boxes are another good option, since cardboard absorbs some moisture.
• Ceramic jars: loose tea that's already been pried off a cake, or small amounts of tea, can go into a breathable ceramic jar with the mouth covered by cotton paper or cloth.
• Original packaging: a tea cake's cotton-paper wrapper or a dragon pearl bag is good protection in itself, so keep it whenever possible.

Keep Raw and Ripe Apart

Raw and ripe pu'er smell very different and will affect each other if stored together. We recommend storing them separately, ideally in different cabinets; teas from different mountains and different years should also be packed separately so their aromas don't mingle.

Should You Seal It or Refrigerate It?

• Raw pu'er cakes for long-term storage: generally don't need to be completely sealed; some air exchange lets them transform slowly. But since Taiwan's humidity is high, you can put them in a thick paper bag or a zip-top bag (not fully sealed) inside a cardboard box as a buffer.
• Tea for everyday drinking, tea bags, and dragon pearls: seal them and keep them somewhere dry, and drink them within a short time for the most stable flavor.
• Refrigeration isn't recommended: fridges are humid and full of mixed odors, and taking tea in and out can cause condensation and moisture damage.

How to Tell if Your Tea Is Stored Well

• Smell: a clean smell of tea or aged aroma, with no musty, stuffy, or other off odors.
• Look: a dry surface with no white, green, or black mold spots.
• Touch: the leaves feel dry, not sticky.

If you find mold spots or a strong musty smell, don't drink it.

Tips for Keeping Small Amounts Long-Term

If you want to watch how a raw tea changes over time, you can:

1. Record the purchase date and information about the tea.
2. Brew it every six months or year, noting the liquor color, aroma, and taste.
3. Compare your notes over time, and you'll clearly see the tea grow.

Storage Tips Through the Seasons

• Spring (plum rain season): humidity is at its highest, so check your tea regularly and run a dehumidifier when needed.
• Summer: watch the temperature and avoid rooms that get the hot afternoon sun or top floors; hot, stuffy conditions can make tea's aroma less clean.
• Fall: the weather is dry, making it a good time to pry tea and tidy your tea cabinet; take the tea out to check on it and let it air.
• Winter: it's cold and the tea transforms more slowly, so just keep it dry and stable.

Storing Tea Bags, Dragon Pearls, and Loose Tea

These small, everyday portions are stored differently from cakes kept for the long term:

• Pyramid tea bags: after opening, put them back in their original packaging and seal it, or move them to an airtight canister, and finish them before the date on the package.
• Dragon pearls: keep the original bag, seal it, and make sure your hands are dry when taking one out.
• Loose tea: keep it in an airtight canister or ceramic jar so it doesn't absorb odors, and drink it soon.

Give Your Tea a Thermo-Hygrometer

The most practical tool for storing tea is a thermo-hygrometer that costs a few hundred NT dollars. Placed in the cabinet or box where you keep your tea, it's far more accurate than going by feel. Good targets are:

• Temperature: between 20 and 28°C; the key is keeping it stable, without swinging hot and cold;
• Relative humidity: about 55%–70%; Yunnan's local standards mostly set 70% as the upper limit.

Taipei's average annual relative humidity over the past decade has been about 71%–78%, and it often runs higher during the spring plum rains and around summer typhoons, so dehumidifying is the top priority for storing tea in Taiwan. The full set of figures is in Temperature and Humidity for Storing Pu'er.

Small Details for Storing Whole Cakes

• Raise it up: don't let boxes or cabinets sit directly on the floor; raise them a few centimeters so air can circulate underneath.
• Keep it off the wall: spots against exterior walls tend to be damp, so leave some space.
• Separate opened and whole cakes: put pried tea in a ceramic or paper canister and drink it soon; keep whole cakes in their cotton paper and store them in a box for the long haul. For how to pry a cake, see How to Open a Pu'er Tea Cake.

FAQ

Can I keep pu'er in the fridge? We don't recommend it. Fridges are humid and full of mixed odors; taking tea in and out can cause condensation and moisture damage, and it can easily pick up food smells.

What is pu'er's shelf life? Pu'er is suitable for long-term storage under the right conditions. Packaged foods are required to show an expiration date, so go by what's on the package; finely broken tea like tea bags is best finished sooner for the best flavor.

Can I still drink pu'er that's been stored for several years? As long as it's been stored properly, smells clean, and has no mold spots or musty smell, you can drink it, and it's often mellower.

What humidity should I keep pu'er at home? Based on Yunnan's local standards and the tea marketing association's recommendations, about 55%–70% relative humidity, with a stable temperature of 20–28°C, is a great target.