WHAT IS THE GREEN TEA STEAMING PROCESS?

May 09, 2022

WHAT IS THE GREEN TEA STEAMING PROCESS?

Every kind of tea leaves goes through a steaming process, and in green tea leaves cases, it happens right after picking. Green tea leaves, when picked, are sent right away to a crude tea factory where the process goes through under high heat. The steaming process is crucial as it is responsible for stopping oxidation in tea leaves. However, if the process is skipped, then the enzymes present in tea leaves change the original components by oxidizing polyphenol, resulting in the oxidation of catechin.

Catechins are the main and vital nutrients in green tea leaves and responsible for many health benefits and give astringent taste to the tea. It works as an antioxidant agent and frees your body from any harmful radicals. Therefore, it is essential to drink green tea, which has gone through each processing step. The steaming process gives your tea a proper taste and keeps the catechins in their original form to get health benefits from it.

The steaming process was made important and frequently used to eliminate the smell of leaves, enhance aroma, inactivate enzymes, and make the tea leaves softer, making it easy to break down in later processing.

green tea leaves steamed

In Japan, the steaming process was introduced long ago, but in recent years, it has gained popularity due to an increase in massive scale export. Kobo Daishi, a Japanese monk, learned this method during his visit to China in 804A.D, and on his return, he taught the technique to other tea vendors. Now every green tea sold in Japan and exported goes through the steaming process.

Nowadays, streaming is done through a tea steaming machine in a properly made factory. The device is made up of a string shaft and a net drum, and both these parts are covered with steaming drums. When leaves go through this machine, oxidizing enzymes present in fresh leaves are killed due to steam-heat. Steamed leaves get a new and fresh green color and contain 75% water. Then it immediately goes through other steps such as rolling and drying.

The steaming process's length varies in green teas as the time determines the flavor, aroma, and color of a tea. Each green tea has a specific timed steaming process, and it varies depending on the growing condition of each green tea, the region of cultivation and elevation, etc. The timing determines most of the results of brewing tea and taken seriously during each green tea type. In the following table, you will see how steaming time changes the fragrance, taste, and color of a tea. 

Green Tea steaming time and characteristics

Method

Light Steaming

Normal Steaming

Deep Steaming

Special Streaming

Extra Deep Steaming

Steaming Time

20-30 sec

Short time

30-40 sec

Short time

40-60 sec

Short time

90-120 sec

Long time

140-160 sec

Two-step steaming

Taste

Clear

(astringency)

Slightly rich

(astringency)

 

Rich

(astringency)

 

Deep rich (smoothness)

Strong.

Low astringency

Fragnance

Strong

Fresh

Fresh

Weak

Light

Leaf Shape

Long, narrow and uniform

Long, narrow and uniform

Long, narrow and uniform

Broken and fine

Coarse

Tea Color

Clear light-green

Clear light-green

Clear light-green

Darkish green

Deep green


Related Articles You May Be Interested

FUKAMUSHI-CHA (DEEP STEAM)GREEN TEA - 5 REASONS WHY THEY TASTE BETTER THAN OTHER TYPES OF JAPANESE GREEN TEA

HOW TO BREW TASTY JAPANESE GREEN TEA

 

 

WHICH TEA KETTLE SHOULD I USE TO BREW JAPANESE GREEN TEA?

 

BREWING UP PERFECTION WITH THE BREVILLE BTM800XL ONE-TOUCH TEAPOT
HOW TO COLD BREW JAPANESE GREEN TEA - THE EXPERT ADVICE

Get Free Bonus Content

Green Tea and Matcha Books for Bonus

If you have ever thought that Green Tea is an “acquired taste” or that it is “too bitter” to enjoy, we’re here to change your mind! We want everyone to experience the health benefits of Green Tea and show you that this can be an amazing, refreshing, and delicious drink when made correctly. With just a few tips on how to brew this powerful leaf we can change your mind about the taste and enjoyment of drinking Green Tea.

Don’t miss out on the health benefits of tea!

  • Improve health
  • Increase brain function
  • Regulate weight
  • Lower your risk of cancers
  • Reduce risk of heart disease
  • Lowers risk of diabetes

We know that you will love this tips to brewing tea and getting the most flavor and elegance out of every cup.  Sign up for Free Japanese Green Tea Club and get this great informative manual on brewing green tea. You will learn what it is that makes it one of the most popular beverages in the world.

Sign up for Free Green Tea Club for to Get The Two Books for Free.


Unsubscribe anytime. It's Free!

What is GREEN TEA CLUB?

Sign up free to Green Tea Club to get tips and exclusive articles about how to use your matcha and green tea for a healthy lifestyle. Green Tea Club is hosted by Kei Nishida, Author of Cook with Matcha and Green Tea and CEO of Japanese Green Tea Company.

Get free E-book "Green Tea Science – 12 Scientific Tips for Brewing Green Tea To Taste Better" By Kei Nishida - Value $9.99

Get free E-book "Matcha Lover's 21st Century Recipe Collection" By Kei Nishida (42 pages recipe book)  - Value $9.99

Get immediate access to 10% Off coupon for your first order and access to Exclusive Coupons and Specials - Value $50+

Monthly Giveaways - Value $50+

Access to New Green Tea Recipe and Health Articles - Value $50+

Unsubscribe anytime. It’s free!

What do you think about the article? Please comment below or reply me privately here!





Leave a comment

Comments will be approved before showing up.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Also in Japanese Green Tea and Health

HOW TO COLD BREW MATCHA: YOUR COMPREHENSIVE GUIDE
HOW TO COLD BREW MATCHA: YOUR COMPREHENSIVE GUIDE

September 27, 2022

Matcha tea makes a deliciously creamy hot beverage. But did you know that it tastes just as good as an iced drink? 

Learn everything you need to know about making the perfect cup of cold brew matcha in this comprehensive guide.

View full article →

How Tin Tea Cans Are Bad for the Environment
How Tin Tea Cans Are Bad for the Environment

September 26, 2022

We are happy to announce that we have switched our most popular matcha product from tin can to paper tube.  Here is the new paper version look like, aren’t they looking great? 

As you know, creation of packages go through months of designing, prototyping and production. These packages are 100% made in Japan with Washi paper technology and very eco-friendly. Since when we started this process, I had been researching about how Tin cans are bad for the environment, so I thought of sharing what I found out here in this blog post. 

View full article →

Green or Brown? What the Color of Your Brew Says about Your Green Tea
Green or Brown? What the Color of Your Brew Says about Your Green Tea

September 19, 2022

Green tea products all come from the same Camellia sinensis species of plant. How come some green tea leaves produce a green brew while others create a brown one if this is the case? Even if the tea leaves are green, they can still make a different-colored drink.

View full article →

Steeping Guide
Steeping Guide