21/03/2022
What is green tea?
Simply put, tea leaves have a green appearance. To keep that green appearance, the leaves for green tea are “fired” as the first step after they are picked off the plant. “Firing” will prevent oxidation from happening. Oxidation is a natural chemical process that turns fresh tea leaves into black tea (the same process that causes an apple to turn brown after cutting it open). A tea is “fired” by subjecting the tea leaves to a brief period of high heat to neutralize the enzymes that enable oxidation. Other types of teas go through the firing process, but green tea is the only one that goes through it as the first step.
Green tea is primarily a product of China and Japan. Chinese green teas are “pan-fired” (meaning dry heat) to prevent oxidation while Japanese green teas are “steam-fired.” These two techniques produce wildly different results and are central to each country’s signature styles. Other countries produce green teas (not all of which are bad), but they usually lack the skills that come with China and Japan’s long traditions of green tea manufacturing.
The common cup characteristics of green tea tend to be a light body with mild astringency and a vegetal/grassy flavor, but these will vary with each particular style. Green tea is often noted as having less caffeine than black tea, but this is not exactly accurate. Green tea has a tendency to become bitter and astringent, so it is usually suggested to be steeped for shorter times and at lower temperatures than black tea (which is not bad advice). This lighter steeping method will produce less caffeine in your cup. If green tea is steeped the same way as black tea, you will get as much (or more) caffeine in your cup.