Cakes, Bricks, Tuos, Dragon Pearls, and Loose Leaf: The Shapes of Pu'er

The most striking thing about pu'er is its shape: round tea cakes, square bricks, bowl-shaped tuos, and small, neat dragon pearls. These shapes aren't just for looks; they have history behind them, and practical reasons too.

Why Compress Tea?

In earlier times, Yunnan's tea was carried to Tibet, Sichuan, and Southeast Asia by mule caravans along the Ancient Tea Horse Road. Loose tea was bulky and broke easily; pressed tight, it took up less space and stacked well, so one horse could carry more tea and it was less likely to be damaged along the way. That's how compressed shapes were handed down.

Today, compression has further advantages:

• Easy to store: Compressed tea has less surface area exposed to air, so it transforms more steadily in storage.
• Easy to measure: Each cake, brick, or pearl has a fixed weight.
• Easy to identify: Wrappers, neifei (embedded tickets), and the like can record information about the tea.

Tea Cakes

The tea cake is the most common shape for pu'er: round and flat, often with a dimple in the center of the back.

• Specifications: The most common size is 357 g per cake, with 7 cakes wrapped in bamboo husk into a "tong," hence the name qizi bing ("seven-sons cake"). The name "qizi bing" is generally thought to have been settled on for export packaging in the 1970s. There are also 100 g, 200 g, and 500 g sizes, among others.
• Breaking off tea: Slide a tea pick or tea knife in at an angle from the edge and gently pry along the layers of leaves, keeping the leaves as intact as possible.

Bricks

Rectangular tea bricks, commonly 250 g, are easy to stack and store. Bricks are usually pressed fairly tight; to break off tea, likewise start at a corner and pry layer by layer.

Tuos

A tuo is shaped like a small bowl: rounded on top and hollow underneath. Traditional sizes include 100 g and 250 g. Tuos from the Xiaguan area have a long history. There are also 3–5 g "mini tuos," brewed one at a time, which are very convenient.

Golden Melon

Golden melon tea is shaped like a pumpkin, a form found among Qing dynasty tribute teas. Today it's mostly collected or given as a holiday gift.

Dragon Pearls

Dragon pearls are made by hand-rolling tea leaves into balls, then pressing and drying them. Each one usually weighs about 5–8 g, exactly one brewing's worth. The advantages of dragon pearls:

• No prying needed: Drop one straight into a gaiwan or teapot, saving the time it takes to pry tea and producing no broken bits.
• Consistent portions: Every brewing is the same, making it easy to get right.
• Easy to carry: Toss a few in your bag and you can brew good tea on the go.
• Great for sharing: Giving them as gifts, one by one, makes a nice impression.

Dragon pearls are rolled tight, and the ball hasn't opened up yet when you first add water, so lengthen the steeping time slightly for the first two or three infusions. Detailed brewing instructions are in How to Brew Dragon Pearls. Guyuntang Tea's Bingdao Old Village Dragon Pearls are 8 g each, 10 per bag.

Loose-Leaf Tea

Pu'er that hasn't been compressed is called loose-leaf tea, and loose-leaf ripe (shou) tea is especially common. Loose-leaf tea is the easiest to portion, suited to everyday brewing in quantity, simmering, or making tea bags.

Tea Bags

Putting finely broken loose tea into tea bags is the most modern format. Pyramid tea bags have more room inside, giving the leaves space to unfurl, so the flavor is released more fully when brewed. The Pu'er Pyramid Tea Bag Gift Box holds 24 bags; one cup of hot water is all it takes, convenient at the office or when traveling.

How to Pry Tea

Prying a compressed tea cake isn't hard once you know a few steps:

1. Pick your spot: Start from the dimple on the back of the cake or from the edge, where it's easier to find a gap.
2. Insert the tea pick at an angle: Slide it in between the layers of leaves at a slant; don't stab straight down.
3. Gently lift: Pry upward along the layers so the chunk separates naturally, keeping the leaves as intact as possible.
4. Pry a little at a time: Pry off enough for a few sessions, put it in a ceramic jar or paper bag, and pry more when you've finished it. Keeping the rest of the cake intact helps it store better.

When prying, hold the cake down with one hand and point the tea pick away from your hand, not toward it, so you don't stab yourself.

How Different Shapes Transform

How tightly tea is compressed affects how fast it transforms in storage:

• Loosely pressed tea: More contact with air, so it transforms faster.
• Tightly pressed tea: Such as tuos, tight bricks, and dragon pearls; transforms more slowly and steadily.
• Loose-leaf tea: Transforms fastest, but also absorbs odors most easily, so take extra care when storing it.

Shapes and the Standards

China's national standard for pu'er groups compressed tea shapes into several categories: round cake, bowl (tuo), square (brick), column, and so on. Compressed tea isn't graded; its quality depends on the raw material and craftsmanship. Loose-leaf ripe tea, on the other hand, is graded from Special Grade and Grade 1 through Grade 10, for 11 grades in total.

Pressing Methods and Shape

Even among round cakes, different pressing methods produce different looks:

• Stone pressing: A person stands on a stone press and twists to apply pressure. The cake has rounded edges and moderate compression, and it's easy to peel apart along the layers when prying.
• Machine pressing: High pressure and consistent dimensions. Especially tightly pressed cakes are called "iron cakes"; you'll need a tea pick to pry them, and the first few infusions need a bit more time.

The full pressing process and how tightness matters are covered in Pressing Pu'er: Steaming, Stone Presses, Machine Presses, and Compression; hand technique for prying is in How to Open a Pu'er Tea Cake.

Other Distinctive Shapes

• Citrus pu'er: Ripe pu'er packed into citrus fruit and dried; xiao qing gan (small green tangerine) is the most common kind. Further reading: Xiao Qing Gan: Ripe Pu'er Inside a Tangerine Peel.
• Lao cha tou (old tea nuggets): Clumps of tea that form naturally during wet piling (wodui). Further reading: Lao Cha Tou.

Shape and Brewing

The tighter the shape, the more time the first few infusions need: loose-leaf tea and tea bags release flavor fastest; pried pieces of round cakes come next; dragon pearls, tuos, and iron cakes are slowest, needing a few extra seconds for the first two or three infusions.

FAQ

What's the difference between dragon pearls and mini tuos? Both are small, one-at-a-time portions of tea. Mini tuos are pressed into a bowl shape with a mold, while dragon pearls are hand-rolled into balls. They differ in tightness and shape, but brew similarly: lengthen the first few infusions slightly to let the tea open up.

Why is there a dimple on the back of a tea cake? The dimple forms during pressing. It keeps the center of the cake from being too thick so moisture escapes easily during drying, and it also helps the cake bear pressure evenly.

Where does 357 g per cake come from? The most common explanation relates to export packaging: one jian (case) is about 30 kg, with 12 tongs of 7 cakes each, which works out to about 357 g per cake.