The short answer to this question is: yes. Tea always contains caffeine. Regardless whether you’re drinking green tea, the even lighter variety white tea, or the dark variety black tea. The difference with coffee is that we don’t call it cafeine in tea, but theine. That does not change anything about the substance itself, it has the same stimulating effect. The lesson here is that coffee drinkers that take coffee to wake up of feel more energetic could easily swap that coffee for a cup of tea, with the same effect!
More cafeine in coffee
Although there is cafeine in both coffee and tea (although it’s called theine in tea), there is MORE of this stuff in coffee. Counted per cup, a cup of coffee contains 2 to 3 times as much cafeine as a cup of tea. A little side note: the exact amount of cafeine in a cup of coffee also depends on the type of coffee. Filter coffee usually contains more cafeine than espresso.
Green vs black tea
Looking at the difference in theine contents, tea can be divided into lighter and heavier varieties. Read this blog post to learn more about the 5 different tea varieties that exist! Black tea is different from green tea because the tea leaves in black tea oxidate for a longer period of time. The longer the oxidation and/or fermentation of the tea leaves, the more theine that tea will usually contain. That means that darker varieties (black tea, oolong tea) will contain more theine (30 – 40 mg per cup) that lighter tea varieties (white tea, green tea) with an average of 15 – 20 mg theine per cup.
No cafeine or theine?
Would you rather skip cafeine and thein all together? In that case, drinking coffee or tea is simply not an option. A solution could be to drink herbal teas. Officially herbal teas are not allowed to carry the name ‘tea’, since there aren’t any tea leaves in the infusion mixture. Herbal infusions (the appropriate name for them), are usually 100% theine free.