How much caffeine in our green tea - the results

by Gary Lawson November 16, 2022

How much caffeine in our green tea

"How much caffeine is in your green tea?" is the question we get asked the most along with whether we have a green tea that is caffeine-free.

Even though green tea has less caffeine than black coffee or black tea, caffeine is found naturally in the leaf so it is found in all of our teas to a certain degree.

We were interested in finding out for ourselves the exact amount so samples of each Ocha & Co green tea were sent to the laboratory for testing.

Here are the results from the testing center:

Amount of caffeine g/100g of leaf

Gyokuro 3.2
Sencha 2.7
Reicha 2.6
Kabusecha 3.0
Fukamushicha 2.4
Kukicha 2.8
Hojicha 2.6
Black Tea 3.9
Single Cultivar Organic Matcha 3.2
Organic Matcha 2.8
Matcha 2.9
Kyoto Uji Matcha 3.2

These results were for the amount of caffeine (g) per 100g of the leaf. This amount will not be found in a brewed cup of green tea where the amount will be significantly less and other factors such as steep time and water temperature will also play a part. The result will be correct for matcha where 100% of the ground leaf will be ingested.

How much caffeine in green tea - conclusion

All the teas contained caffeine as was expected. The amount of caffeine in the green teas generally depended on the type. Shade-grown green teas such as Gyokuro & Kabusecha contained the highest amount of caffeine. The lowest level of caffeine was found in Hojicha which is a roasted green tea and Fukamushi which has extra steaming. Black tea which is not steamed was found to contain the highest amount of caffeine.