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How to Make Cold/Ice Brew Tea

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Drinking cold green tea is great when you’re thirsty on a hot summer day.

Its rich and refreshing flavor not only relieves your thirst but refreshes your mood.

How much do you know about cold / ice brew green tea?

What is cold / ice brew tea?

Cold / ice brew green tea is literally green teas brewed with cold water / ice.

The ingredients extracted in green tea would vary according to the water temperature to brew, which makes green teas taste surprisingly different even though using the same tea leaves.

How different from hot brew green tea?

The lower the extraction temperature of green tea, the less catechins, which are the source of bitterness, are extracted, but amino acids, which are the source of sweetness and umami, are extracted unchanged. Therefore, ice/cold brew teas have less bitterness and a mellower taste with rich umami and sweetness. In particular, the temperature of ice brewing is lower than that of mizudashi, resulting in a deeper, richer flavor with more umami.

In addition, the color tea does not change much, so the water remains a beautiful green color even after a long time. Compared to tea made with hot water, mizudashi and iced tea contain much less caffeine, making it a good choice for a cup before bed.

How to cold brew green tea

There are a few ways to cold brew green tea, but we are going to introduce the standard one.

Prepare cold water

You can use tap water but it will be more better using tap water that’s once boiled and cooled, mineral water or filtered water.

Prepare tea bags

Put 10-15g of tea leaves in a bag to make 1 liter of green tea ( 1 tablespoon of green tea leaves is measured about 5g).

If you don’t have tea bags, you can put tea leaves directly in a teapot and use a tea strainer when pouring in.

Make green tea in a cold brew tea maker (teapot).

Put the tea bag in the cold brew tea maker (teapot) and pour the cold water in, and leave the pot in the fridge for 3-6 hours.

How to ice brew green tea

You may have cold brewed green tea before, but few of you may have ice brewed green tea.

Ice brew tea tastes really good as it extracts more sweetness and umami than cold brew.

Here’s the recipe to make 1 liter.

Prepare ice

Prepare 1 liter of ice cubes

Put tea leaves in an ice brew tea maker (teapot)

Place 15-20g of tea leaves (about 3-4 tablespoons) on the bottom of the teapot. Spread the tea leaves out as much as you can so the tea ingredients can easily get extracted.

Put the ice in and wait till it melts

Place the ice on the tea leaves in the teapot and leave it till the ice melts. Rich umami ingredients will be extracted by taking time.

Shake gently before drinking

It’ll be ready when the ice melts, then shake the teapot gently before pouring in a glass.

The ingredients on the bottom can be diffused evenly by shaking, which makes the taste well-balanced and the color look better.

It would surely be no problem using a kyusu teapot instead of an ice brew tea maker.