![]() Sencha is the most famous Japanese steamed tea and Dragon Well is probably the most famous Chinese roasted tea.įinally, there’s the actual preparation and ingestion of tea in your home. Japanese green tea leaves are usually steamed, while Chinese green tea leaves are roasted. For example, tea leaves that are roasted to stop fermentation tend to have lower levels of caffeine than leaves that are steamed. Since the entire leaf is ground up to make matcha powder, and then consumed, a cup of matcha has a far higher caffeine content than other teas.Īfter harvest, processing plays into the total caffeine content as well. Matcha is also made from shade grown leaves. Shade-grown teas include Dragon Well and Gyokuro. One example is putting tea plants in the shade for several weeks before harvest. Since plants have smaller leaves and buds earlier in the year, you’ll find a higher caffeine concentration in the parts taken.Ĭhanges in growing practices can also result in an effect on caffeine levels. Teas that fall into this spring category include silvertip white teas, gold tipped black teas and the higher quality Darjeeling teas. Typically, if farmers harvest the tea in spring, it will have a higher caffeine level than teas harvested later in the year. Typically, leaves of the assamica variety have higher levels of caffeine. sinensis, generally found in China, and Camellia sinensis var. It shows up in two primary forms: Camellia sinensis var. All tea comes from the same plant, called the tea plant. Tea varietals are one significant factor. ![]() ![]() ![]() Let’s look at the main factors that affect how much caffeine is in a cup of tea. How long you steep the leaves has the largest impact on the amount of caffeine that actually ends up in your cup. That’s because numerous other factors influence caffeine levels in your tea, from where you source the tea to how it is cultivated.Įxternal conditions, like altitude, type of fertilizer, and the environment, can affect the caffeine level just as much as the grade of the leaf.īut remember that a long steeping time will always result in more caffeine. The higher steeping temperatures also extract more caffeine from the leaves.īut if you use cooler water and a shorter steeping time, the resulting cup of black tea will have far less caffeine than a cup of white tea or most green teas. The type of tea is not one of those factors.Īs mentioned, a cup of black tea has a higher caffeine content on average because of the longer infusion time. can have high levels or low levels of caffeine. Let’s explore the intricacies of tea to understand why any type of tea, be it black, white, green, etc. However, if you look at the original composition of the tea leaves, white tea leaves contain much more caffeine by weight.īut since you don’t usually steep it as long as black tea, the resulting cup of tea has less caffeine in it.ĭid that answer surprise you? I know I was a bit shocked when I just started learning about tea. In practical terms, a cup of black tea usually has higher levels of caffeine, because it generally steeps for the longest period of time. Longer steeping times provide higher caffeine levels. Generally, a tea’s caffeine level correlates with the steeping duration. ![]()
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