Short answer: A cup of Da Hong Pao usually holds less caffeine than a cup of coffee, but it is not a low caffeine tea. A standard 8 oz cup of brewed oolong sits around 38 mg in USDA data, while a strong lab brew of Da Hong Pao (3 g of leaf in 150 ml of boiling water for 3 minutes) measured about 96 mg. The biggest factor is not the tea. It is how much leaf you use, how hot the water is, and which steep you are drinking.
30 SECOND CAFFEINE CHECK
~38 mg
Typical 8 oz cup of brewed oolong (USDA)
~96 mg
Strong lab brew of Da Hong Pao, 3 g in 150 ml
7 in 10
Share of the caffeine that arrives in the first three gongfu pours
<20%
How far roast level moved caffeine in a Wuyi study
~9%
Caffeine a 30 second rinse removes. Not a decaf trick
400 mg
FDA daily reference for most healthy adults
How Da Hong Pao compares with coffee and other teas
These are published figures, each measured a different way. Read them as ranges, not promises about a specific cup.
| Drink | Serving | Caffeine | Source |
|---|---|---|---|
| Brewed coffee | 12 oz | 113 to 247 mg | FDA |
| Black tea | 12 oz | 71 mg | FDA |
| Green tea | 12 oz | 37 mg | FDA |
| Brewed oolong | 8 oz | about 38 mg | USDA FoodData Central |
| Da Hong Pao, lab brew | 3 g leaf, 150 ml, boiling, 3 min | about 96 mg | Beverage Plant Research, 2025 |
Why is the lab number more than double the USDA one? The lab used 3 g of leaf in a small 150 ml flask, which is a strong ratio. That 2025 study measured 638.9 mg of caffeine per liter in its Da Hong Pao infusion, which works out to roughly 96 mg in the flask. A teabag style cup uses less leaf in more water. Same plant, very different cup.
The four dials that set your caffeine
1
Leaf amount
The strongest dial. Twice the leaf in the same water puts far more caffeine in the cup.
2
Water temperature
Hotter water pulls caffeine faster. A 2007 lab study found cold water released it markedly slower than hot.
3
Steep time
Caffeine keeps coming out for minutes, not seconds. A 2 minute mug is lighter than a 5 minute one.
4
Which steep
The first pours carry most of it. Later steeps from the same leaf are much gentler.
Want a tea that fits your caffeine budget?
Our AI tea advisor asks when you drink tea and how sensitive you are, then suggests which of our three teas to start with and how to brew it.
Ask the AI tea advisorCaffeine pour by pour in a gongfu session
A 2020 study in Scientific Reports brewed Da Hong Pao fourteen times in a row, with 5 g of leaf in 110 ml of boiling water, and measured each pour. Roughly seven tenths of the caffeine the leaf gave up was already in the first three cups. From the sixth pour on, the lab could barely find any. (Our steeping guide covers what those same pours taste like.)
The practical lesson: if you love the taste but not the buzz, hand the first few pours to a friend and keep the later ones for yourself. This describes how caffeine leaves the leaf in a lab. It is not a health claim, and it will shift with your leaf amount and timing.
Three caffeine myths about Da Hong Pao
✗ "Darker roast means less caffeine"
A 2021 RSC Advances study of Wuyi rock teas, Da Hong Pao included, found caffeine moved by less than 20 percent across roast levels, and medium roast samples were often the highest. Roast changes flavor far more than caffeine.
✗ "A quick rinse decaffeinates it"
In research by Hicks, Hsieh and Bell published in Food Research International, a 30 second infusion released only about 9 percent of the caffeine. Rinse for flavor, not for sleep.
✗ "Oolong is always the mild option"
At a strong ratio, the lab brew above landed near the low end of a cup of coffee. Mild is something you brew, not something the label guarantees.
How to brew a lighter cup, or a fuller one
Each Tastea packet holds 6 g of whole loose leaf, enough for a 500 ml teapot or half a packet for a mug with a strainer. Our Da Hong Pao brewing guide has the full method.
✓ Lighter cup (afternoon)
- Half a packet (3 g) in a 12 oz mug
- Water at 195°F / 90°C
- Steep 2 minutes, then strain
- Or cold brew half a packet in 500 ml in the fridge overnight
✓ Fuller cup (morning)
- A whole packet (6 g) in a 500 ml teapot
- Water at a full boil, 212°F / 100°C
- Steep 2 minutes 30 seconds to 3 minutes
- Drink the first and second steeps
A note on our own tea: we have not lab tested the caffeine in Tastea's Da Hong Pao. Half a packet uses the same 3 g as the lab brew above, so a hot, long first mug could land in a similar range. Treat that as an estimate, not a measurement.
How much is too much?
The FDA cites 400 mg a day as an amount not generally linked to negative effects for most healthy adults, and notes that sensitivity varies a lot between people. If you are pregnant, trying to conceive, breastfeeding, or managing a health condition, the FDA suggests asking your health care provider about limits. Nothing here is medical advice.
Why Wuyi drinkers rarely worry about it
In the Wuyi Mountains, Da Hong Pao is usually drunk the slow way: many thimble sized cups, poured over an afternoon. That rhythm happens to front load the caffeine and leave the gentle pours for later, so the session winds down along with the leaf. If you are new to that style, our gongfu guide walks through it, and this flavor map explains what changes from cup to cup.
Where to start
US orders over $35 ship free. If you are not sure which tea suits your day, start with the Discovery Trio, brew one light and one full, and let your own afternoon tell you.
Sources: FDA, "Spilling the Beans: How Much Caffeine Is Too Much?"; USDA FoodData Central (brewed oolong); Ding et al., Beverage Plant Research 2025; Scientific Reports 2020, Dahongpao brewing study; Liu et al., RSC Advances 2021; Hicks, Hsieh and Bell, Food Research International; Yang, Hwang and Lin, Journal of Chromatography A 2007. Research findings describe lab measurements, not health outcomes.
Wei Zhen
