![]() Polyphenols found in green tea include epigallocatechin gallate (EGCG), epicatechin gallate, epicatechins and flavanols, which are under laboratory research for their potential effects in vivo. The brew's taste is also affected by the steeping technique two important techniques are to warm the steeping container beforehand to prevent the tea from immediately cooling down, and to leave the tea leaves in the pot and gradually add more hot water during consumption. Steeping too hot or too long results in the release of excessive amounts of tannins, leading to a bitter, astringent brew, regardless of initial quality. Higher-quality teas like gyokuro use more tea leaves and are steeped multiple times for short durations. Generally, lower-quality green teas are steeped hotter and longer while higher-quality teas are steeped cooler and shorter, but usually multiple times (2–3 typically). Steeping temperatures range from 61 ☌ (142 ☏) to 87 ☌ (189 ☏) and steeping times from 30 seconds to three minutes. Steeping, or brewing, is the process of making tea from leaves and hot water, generally using 2 grams (0.071 oz) of tea per 100 millilitres (3.5 imp fl oz 3.4 US fl oz) of water (H 2O) or about 1 teaspoon of green tea per 150 ml cup. Steeping, brewing and serving Four varieties of green tea prior to brewing The colour of green tea brewed for 3 minutes at 90 ☌ (194 ☏) ![]() Record Drinking Tea Nourishing Life), written by Zen priest Eisai in 1211, describes how drinking green tea may affect five vital organs, the shapes of tea plants, flowers and leaves, and how to grow and process tea leaves. The Kissa Yōjōki (喫茶養生記 Book of Tea, lit. Ī book written by Lu Yu in 618–907 AD ( Tang dynasty), The Classic of Tea ( simplified Chinese: 茶 经 traditional Chinese: 茶 經 pinyin: chájīng), is considered important in green tea history. Tea consumption has its legendary origins in China during the reign of mythological Emperor Shennong. Main articles: History of tea and History of tea in China The tea fields in the foothills of Gorreana, Azores Islands, Portugal: the only European region other than Georgia to support green tea production. sinensis used, growing conditions, horticultural methods, production processing, and time of harvest. Several varieties of green tea exist, which differ substantially based on the variety of C. ![]() Green tea originated in China, and since then its production and manufacture has spread to other countries in East Asia. Green tea is a type of tea that is made from Camellia sinensis leaves and buds that have not undergone the same withering and oxidation process which is used to make oolong teas and black teas. The appearance of green tea in three different stages (from left to right): the infused leaves, the dry leaves, and the liquid.
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