The Best Way to Cold Brew Ryokucha Green Tea

It is well-known that Japanese “Ryokucha (緑茶: literally meaning Green Tea)” contains lots of components that are good for health, but have you ever heard about the health benefit of the cold-brewed Japanese green tea?

Cold-Brewed Ryokucha Green Tea

Actually, cold-brewed green tea also brings various good effects on the body, which are different from the ones brought by hot-brewed green tea.

What is better, the cold tea is umami-rich like the luxurious high-grade Japanese green tea “Gyokuro (玉露)”, even if it is made from inexpensive Ryokucha tea leaves.

Why is it Umami-Rich?

Cold-Brewed Ryokucha Green Tea

Here are 2 main reasons why cold-brewed Ryokucha green tea has plenty of umami taste compared to hot-brewed green tea.

  • If Ryokucha green tea is brewed at a low temperature, the bitterness and astringent taste from catechins aren’t generated in the tea.
  • Instead, the substance known as an umami component, theanine is extracted a lot, so cold-brewed green tea has a rich sweetness and is packed with umami as compared to hot-brewed green tea.


  • Although cold-brewed green tea contains little catechin with an excellent antioxidative effect inhibiting the growth of human cancer cells, it is instead rich in epigallocatechin that activates macrophages, a type of immune cell. Hence, the cold Ryokucha green tea helps enhance the immune system.
  • Besides, unlike hot-brewed green tea, cold-brewed green tea also contains little caffein, so the cold tea is safe for children.

The Best Way to Cold Brew Ryokucha Green Tea

How to Cold Brew Ryokucha Green Tea

Lastly, let me introduce one of the best ways to cold brew Japanese Ryokucha green tea, which was featured on a TV program. The icy green tea not only has various benefits but it is tasty, umami-rich, also perfect for the hot summer season.

Ingredient Quantity
Ryokucha green tea leaves 10 g
Iced water 100 cc
  1. Put the Ryokucha green tea leaves in a Kyusu teapot and pour in the iced water
  2. Let it rest for over 5 minutes
  3. Brew and enjoy the cold green tea!

Although you use a generous amount of tea leaves for this recipe, you can brew and enjoy the icy chilled Ryokucha green tea many times by adding additional iced water.


Hi, I'm Tomo, a Japanese blogger living in Niigata Prefecture, Japan. For the purpose of enriching your life, I would like to introduce things about Japan on this blog, especially unique Japanese products, cooking recipes, cultures, and facts and trivia.

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