Iced black tea is a drink. Iced black tea was invented by accident. 1904 In the summer, Richard Blechynden, a tea merchant, tried to sell his black tea to people when attending the World Expo held in St. Louis, USA, but even Richard couldn't drink his hot black tea because of the unbearable summer heat. Just when he was depressed, a pile of ice cubes accidentally fell into a bucket of hot black tea at hand. Richard thought it would be a pity to lose it, so he took a cup to quench his thirst. Unexpectedly, this cup of iced black tea was cool and carefree, and Richard had a brainwave and resold it. It was sold out. This is the origin of iced black tea. Ordinary people can drink it. Mainly suitable for people with hypertension, hyperlipidemia, coronary heart disease, arteriosclerosis, diabetes, eating too much greasy food and drunkenness. Based on this feature, it is favored by men. Black tea is made of tea suitable for making this product by withering, twisting (cutting) and fermentation. It is extracted by typical processes such as drying. Because of its dry brown color, the brewed tea soup is mainly red, hence the name. When black tea was first produced, it was called "black tea". During the processing of black tea, a chemical reaction centered on the oxidation of tea polyphenols occurred. The chemical composition of fresh leaves changed greatly, and tea polyphenols decreased by more than 90%, resulting in new components such as theaflavins and thearubigins. Aroma substances have increased from more than 50 kinds of fresh leaves to more than 300 kinds, some of which are caffeine. Catechin and theaflavins complexed to form a delicious complex, thus forming the quality characteristics of black tea, red soup, red leaves and sweet alcohol.

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