CTC tea - AkTea Processors
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CTC tea

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Crush, Tear, and Curl (also Cut, Twist, Curl) is a method of processing black tea, similar to that of orthodox tea manufacture. Instead of the leaves being rolled as a final stage, they are passed through a series of cylindrical rollers with hundreds of small sharp “teeth” that crush, tear, and curl the tea.

 

CTC was invented by William McKercher during 1930-1931, and the process spread in the 1950s through the 1970s, most rapidly in India and Africa. Today, most black teas produced use the CTC method or the closely related rotovane orthodox manufacture. CTC and rotovane orthodox have a finished product that is well suited for tea bags, as the product quickly gives a dark brew.

 

For many large tea producers, 80% to 90% of the factory’s production is of small, broken, primary grades suitable for tea bag blends; the remaining 10% to 20% are secondary grades which trade at a discount to the primary grades. The convenience, low price, strong liquor, generic flavor, and mild bitterness all have contributed to the near-monopoly that CTC-type teas now enjoy in South Asia.

 

CTC teas generally produce a rich red-brown color when they are boiled by the Indian method. The drawback of the CTC method is that it tends by its nature, and unfortunately by adulteration, to homogenize all black tea flavors. In the process of crushing, tearing and pelletizing the tea leaves, large pressures and stresses occur which break down the cells, releasing large amounts of the phytins that normally oxidize to produce black tea’s mahogany color. Since, regardless of origin, CTC teas in their dry form are generically “tea-like” in aroma, very similar in pelletized form, it is very easy to adulterate a more expensive CTC-type tea with inexpensive and generally mild lowland teas of the same process. Whole and broken leaf teas by contrast are quite varied in appearance, making adulteration more difficult.

 

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