GreenTea.st
Ruan Zhi (Soft Stem) Oolong

Ruan Zhi (Soft Stem) Oolong Caffeine Content

20-35 mg per cup

caffeinePage.whiteTea

20-35 caffeinePage.mgPerCup

Moderate
0 mg50 mg100 mg

How does Ruan Zhi (Soft Stem) Oolong compare?

Ruan Zhi (Soft Stem) Oolong
28 mg
Coffee
95 mg
Black Tea (avg)
47 mg
Green Tea (avg)
35 mg
White Tea (avg)
25 mg
Herbal Tea
0 mg

Factors Affecting Caffeine Content

Brew Time

Longer steeping times extract more caffeine. A 1-minute steep may yield half the caffeine of a 5-minute steep.

Water Temperature

Hotter water extracts caffeine more quickly. Boiling water releases caffeine faster than cooler temperatures.

Leaf Amount

Using more tea leaves per cup increases caffeine content proportionally. Standard is 2-3 grams per 240ml cup.

Leaf Grade

Young buds and leaf tips contain more caffeine than mature leaves. Teas made from tips tend to be higher in caffeine.

L-Theanine Content

Caffeine (mg/cup)

20-35 mg

L-Theanine (mg/cup)

10-18 mg

Caffeine to L-Theanine ratio

0.6:1

L-theanine works synergistically with caffeine to promote calm alertness without jitters.

Best Time to Drink

Can be enjoyed any time, including evening

Very low caffeine content means most people can enjoy this tea at any time, including evening.

Compare with Similar Teas

TeaCaffeine (mg/cup) (mg/cup)
Ruan Zhi (Soft Stem) Oolong20-35 mg
Oolong Tea30-50 mg
Dan Cong (Phoenix Oolong)30-45 mg
Mi Lan Xiang (Honey Orchid) Dan Cong30-45 mg
Ali Shan Oolong25-40 mg
Da Hong Pao (Big Red Robe)25-40 mg
Dong Ding Oolong25-40 mg
Iron Goddess (Tie Guan Yin)25-40 mg
Li Shan (Pear Mountain) Oolong25-40 mg
View full Ruan Zhi (Soft Stem) Oolong profile

Frequently Asked Questions

How much caffeine is in Ruan Zhi (Soft Stem) Oolong?
Ruan Zhi (Soft Stem) Oolong contains 20-35 mg of caffeine per cup. This can vary depending on brewing time, water temperature, and leaf quantity.
Does Ruan Zhi (Soft Stem) Oolong have more caffeine than coffee?
Ruan Zhi (Soft Stem) Oolong has less caffeine (20-35 mg) than coffee (95 mg per cup), making it a gentler alternative.
Is Ruan Zhi (Soft Stem) Oolong safe to drink daily?
Ruan Zhi (Soft Stem) Oolong (20-35 mg per cup) is moderate in caffeine. Most adults can safely drink 4-6 cups daily.
How can I reduce caffeine in Ruan Zhi (Soft Stem) Oolong?
To reduce caffeine in Ruan Zhi (Soft Stem) Oolong: use cooler water, steep for less time, or use fewer leaves. The first infusion contains the most caffeine.
Can I drink Ruan Zhi (Soft Stem) Oolong during pregnancy?
During pregnancy, limit caffeine to under 200 mg/day. Ruan Zhi (Soft Stem) Oolong also contains L-theanine (10-18 mg), which may help with relaxation.