The Council of Agriculture stated that compared with hot tea, the brewing process of cold-brewed tea is simpler, and cold-brewed tea is less likely to dissolve catechins or caffeine with a bitter taste, so it is less likely to fall asleep after drinking it. No. (Picture taken from freepik)
[Health Channel/Comprehensive Report]Tea is almost a representative of elegant life. It is not only loved by children and adults, but also has high nutritional value. But how to brew cold tea correctly? In this regard, the Agricultural Committee stated that compared with hot tea, the brewing process of cold brewed tea is simpler, and because of the amino acids with a fresh and sweet taste, it is easy to dissolve even if it is cold brewed at low temperature. In addition, cold brewed tea is less likely to dissolve catechin or caffeine with a bitter taste, so it is less likely to fall asleep after drinking it.
COA’s Facebook fan page “Executive Yuan Agriculture CommitteeThe article pointed out that generally when making hot tea, the dissolution rate of components such as catechin and caffeine is the highest, so drinking it will have a bitter taste, and it is easier to make people unable to sleep. If you want to drink sweet tea soup, you can cool down and brew it, or brew tea in cold brewing mode. It is also a good choice to have a cup of cold brewed tea in hot summer.
Please read on…
Compared with hot tea, which needs to be brewed at a precise time, the brewing process of cold brew tea is simpler, and anyone can easily get started. Therefore, the cold brew time required for different types of tea has been sorted out for your reference:
●The green tea is cold brewed for 4 hours.
●Fragrant bar-shaped Baozhong tea (Wenshan Baozhong tea) is cold brewed for 6 hours.
●Flavoured spherical oolong tea (alpine oolong tea) is cold brewed for 8 hours.
●Boiled aroma spherical oolong tea (frozen top oolong tea, Tieguanyin tea) cold brewed for 6 hours.
●The roasted aroma spherical oolong tea (red oolong tea) is cold brewed for 10 hours.
●The black tea is cold brewed for 10 hours.
The Agriculture Committee stated that the above brewing method is to use raw leaf tea, and cold brew with a ratio of 1:50 tea and water at a temperature of 4 degrees C. You can adjust the time or proportion of cold brewing according to personal preference. In addition, the water used for brewing is also very important. The pH is preferably between pH 6 and 6.5, and soft water with a hardness lower than 120mg/L is more suitable. If there is no relevant instrument to measure water quality, you can also choose commercially available packaged water (like It is mineral water, pure water, RO reverse osmosis water, etc.), you can try different waters to choose the most suitable water for you.
As for the nutritional value of tea,Committee of AgricultureIn addition, the most important components in tea are rich in polyphenols, organic acids, amino acids, vitamins and a variety of essential trace elements such as manganese, iron, zinc, copper, etc. The most well-known ones are catechins in green tea and oolong tea, while fermented black tea and oolong tea contain catechin oxides such as theaflavins, thearubigins, and polyester catechins.
●Tea polyphenols:It has antioxidant properties and is an important ingredient related to health.
●Theanine:It is a unique amino acid in tea, which has a relaxing effect after drinking tea.
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