MIZUDASHI - Cold Brew Tea

Time draws out the flavor.

Brewing with cold water

What is
“Cold Brew” ?

MIZUDASHI is a cold brewing method, in which cold water is used from the beginning instead of hot water. As the brewing takes place slowly over time, the flavor intrinsic to tea leaves and coffee beans comes out.


Mild flavor intrinsic to tea leaves

Tea leaves contain tannin and caffeine, which cause bitterness and astringency, as well as theanine, an amino acid that provides an overall umami (savory taste) and sweet complexity. If tea is brewed at a high temperature, tannin and caffeine will dissolve into the water and can make the tea taste slightly bitter. However, if tea is prepared at a low temperature slowly, the tannin and caffeine will hardly dissolve into the water, and theanine, an amino acid, can be accentuated. This is why tea prepared with cold water is rarely bitter or astringent, and embodies a mild yet rich flavor, the inherent nature of tea leaves.

Black tea has no vitamin C. Theanine is contained in high concentrations in green tea, especially Japanese green tea, but not much in black tea. For black tea, the astringent taste of catechin is appreciated more highly than the umami (savory taste) of theanine.


Cold Brewing Method

Brewing tea by steeping tea leaves in water. A mild, sweet flavor is produced.




Place tea leaves into the glass bottle.


Pour water up to ★and mount the removable bottle spout with the filter set inside onto the glass.


Set the stopper into the spout and let the tea brew in the refrigerator for 3-6 hours.

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