How much caffeine is in Guzhu Zisun Purple Bamboo Tea?

Each 8 oz cup (240ml) serving contains approximately 28 mg of caffeine. For comparison, a standard 8 oz cup of brewed drip coffee contains around 95 mg. Actual content varies with dose, water temperature, and contact time.

What temperature should I use for Guzhu Zisun Purple Bamboo Tea?

Target 80°C (176°F). Below this range the cup tends toward sourness and thinness from under-extraction; above it, bitterness rises faster than sweetness.

How long should Guzhu Zisun Purple Bamboo Tea be extracted?

Extract for 2:00-3:00 depending on leaf and style using Glass Teapot, at a ratio of 12g leaves per Liter of water, prepared at Whole Leaf or Powder. Time and ratio move together: a heavier dose generally wants a shorter contact time.

Why does my Guzhu Zisun Purple Bamboo Tea taste bitter?

Bitterness almost always indicates over-extraction. Shorten the contact time, lower the water temperature slightly, or use less leaf. Change one variable at a time so you can tell which one was responsible.

Who should avoid Guzhu Zisun Purple Bamboo Tea?

Caffeine and serving strength vary with dose, preparation, and individual sensitivity. Use individualized guidance for pregnancy, medication interactions, allergies, reflux, or other health concerns. This is general educational information, not medical advice — consult a qualified healthcare professional about your own circumstances.

Reviewed Aug 2026

Green Tea & Matcha · Changxing, Zhejiang, China

Guzhu Zisun Purple Bamboo Tea

Name: How to Brew Guzhu Zisun Purple Bamboo Tea
Prep time: 3 min
Cook time: 3 min
Total time: 3 min
Yield: 8 oz cup (240ml)
Cuisine: Changxing, Zhejiang, China
Ingredients: 2.9 g loose-leaf green tea; 240 g filtered water at 80°C

Tender greens, orchid, and light chestnut sweetness.

A historic Zhejiang green tea with delicate leaf perfume and restrained sweetness.

Sensory profile

Comparative scale

sweetnessHigh

acidityLow

bitternessVery low

bodyModerate

aromaVery high

You should taste

How it unfolds

Aroma → Palate → Finish

AromaBefore and as you sip

pronounced aroma

PalateWhile it is in the mouth

Bamboo

clear sweetness

FinishAfter you swallow

Chestnut

moderate body

Where it sits

Stronger than 71 of the 345 other drinks in the catalogue, and weaker than 271.

That is 28 mg in a 8 oz cup (240ml) serving — a concentration of 11.7 mg per 100 ml. The scale above ranks whole servings, and servings differ in size, so a larger drink can sit further right while being weaker cup for cup.

CupCura editorial estimate. No public food database has measured this preparation, so this figure is our own and is not independently sourced.

What people say

Reviews and photographs from people who have actually drunk this. Everything here has been read by a moderator before publication.

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Gear for this drink

Fellow Ode Brew Grinder Gen 2

Direct-drive motor with 64mm stainless steel flat burrs engineered specifically for pour-over, drip, and cold brew clarity.

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Guzhu Zisun Purple Bamboo Tea

Sensory profile

You should taste

How it unfolds

Where it sits

What people say

Fellow Ode Brew Grinder Gen 2

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