Gokou Matcha Koiai
Gokou Matcha Koiai
🍃 Pesticide free
🇯🇵 Directly sourced from Japan
🚚 Free worldwide shipping
🔐 Secure payment
😍 Great customer service
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Learn all the secrets of the Gokou Matcha Koiai
The Gokou Matcha Koiai is made by the Osada family in Shizuoka using the Gokou cultivar, which gives the tea a rich savory taste and full-bodied finish
Taste

Discover the results of Nio Teas’ 4 step tea tasting method
To evaluate the Gokou Matcha Koiai, we evaluated the texture of the matcha as well as the flavor. Does it produce a dryness, sweetness, minerality or acidity? We’ll also evaluate how thick or rich the consistency of the matcha is, otherwise known as mouthfeel. Finally, for matcha specifically, we like to take a look at the vegetal flavor of the tea, as this is a profile consistent across all types of matcha.
Step 1 - Observing the Appearance
The color of the Gokou Matcha Koiai is a darker olive green color and its sifted into a fine powder
Step 2 - Assessing the Aroma
The aroma coming off the powder as it is mixed into water is salty and savory, almost like a marinated tofu
Step 3 - Tasting the Tea
The Gokou Matcha Koiai starts off strong with a rich savory flavor. There are these steamed vegetable notes in the mid palate but they are well balanced by the creaminess. The finish is slightly on the drier side, with a slightly starchy, graham cracker sweetness added in.
Step 4 - Evaluating the sensation on the palate
For the most part, the Gokou Matcha Koiai is smooth and savory. There is absolutely no acidity, but there is a hint of sweetness and a hint of dryness
100% Organically grown and Ethically Sourced
At Nio, we prefer working with tea farmers who use organic farming techniques and avoid the usage of toxic pesticides or chemicals. We firmly believe that this natural farming approach not only enhances the flavor of the tea but also promotes the well-being and sustainability of the tea fields.
Our research indicates that tea farms that follow these organic farming practices not only cultivate robust and thriving tea plants but also foster a vibrant ecosystem that sustains a diverse range of flora and fauna.
Nio Teas Unique Organically grown sourcing process
- Conducting comprehensive taste tests to determine the optimal flavor profile for each tea
- Continuously communicating with farmers to gain insight into their use of organic and non-chemical farming methods
- Making on-site visits to tea plantations to evaluate the quality of crops and manufacturing facilities
- Assessing the surrounding ecosystem to verify the presence of a diverse range of plant and animal species, and to maintain the vitality of the area surrounding the tea fields.

JAS Certified
You’ll find that the Gokou Matcha Koiai, as well as some of our other teas bear the JAS logo, certifying that they comply with the Japanese Agriculture Standards. These regulations prohibit the use of pesticides and chemicals in the cultivation of tea.
At Nio, we selectively work with farmers who practice pesticide and chemical-free farming methods. When working with bigger tea farmers, we require them to have the JAS label, which can be obtained through soil sampling and analysis.
For smaller tea farmers with limited resources for soil testing, we also accept the "pesticide-free" label to provide them with the opportunity to get their teas discovered while adhering to our commitment to sustainability and quality.
How to prepare the tea
To prepare the Gokou Matcha Koiai and make a perfect bowl of matcha tea, follow these basic steps:
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Step 1
Take 2 grams of matcha powder and sift it into your matcha bowl to eliminate clumps caused by humidity.
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Step 2
Heat the water up to 70 degrees Celsius or 160 degrees Fahrenheit.
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Step 3
Add around 1 tablespoon of water to the bowl and stir the matcha powder until it forms a smooth, consistent paste. Then, add 100ml of water to the bowl
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Step 4
With your whisk, gently scrape the sides and bottom of the bowl to blend the matcha and water.
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Step 5
Vigorously whisk the matcha in quick zigzag motions using your wrist until a light green foam forms on top.
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Step 6
Enjoy your Gokou Matcha Koiai
Necessary teaware
If you're planning to make matcha, you will need some specific tools and accessories, including a matcha bowl (chawan) - a wide, shallow bowl typically made of ceramic or porcelain that is designed for whisking matcha. You'll also need a matcha whisk (chasen) made of bamboo and featuring thin tines, which is used to mix and froth the matcha powder with hot water. A bamboo scoop, called a matcha scoop (chashaku), is also necessary to measure the correct amount of matcha powder and transfer it to the bowl. Lastly, using a sifter to sift the matcha powder is a crucial step in the traditional Japanese tea ceremony and is also recommended for everyday use to ensure a consistently smooth texture and high-quality cup of matcha.
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Customizable Matcha Set
4.9 / 5.0
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Matcha Bamboo Whisk
4.615384615 / 5.0
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Black Chawan Tea Bowl
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Grey Chawan Bowl
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White Matcha Bowl
4.875 / 5.0
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Black Matcha Bowl
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Beige Japanese Matcha Bowl
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Location of production and farmer
Information about the farm
The Osada family has been cultivating tea in Shizuoka for generations. They have successfully transformed their small, family-run tea farm into a medium-sized enterprise that provides employment opportunities to many people in the surrounding area.
Despite producing a higher quantity of tea, they continue to uphold their commitment to quality. They achieve this by partnering with small producers located in the mountains. By doing this, they are able to combine the attention to detail of a small tea field with the experience and resources of a larger operation. To improve quality further, they relocated their production facility to the mountains, closer to the source of their tea.

Sourced in Shizuoka
Japan
The Gokou Matcha Koiai is produced in the organic village of Isagawa, which is a term used to refer to a group of tea farmers who have pledged to grow their tea without the use of harmful pesticides or chemicals.
When it comes to tea cultivation, it's not just enough to ensure that one's own fields are free from pesticides and chemicals. It's equally important to ensure that the surrounding lands are also free from these harmful substances. This is why it's crucial for the farmers of Isagawa to collaborate and ensure that all their tea fields are entirely organic.
Cultivar and tea plant variety
As the name would suggest, the Gokou Matcha Koiai is made from the Gokou matcha cultivar. This cultivar is well sought after for it’s unique and powerful flavor.
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Gokou
Gokou matcha is highly prized for its strong savory or “umami” flavor profile. This is the flavor profile a lot of tea drinkers are looking for in a matcha, and it is perfectly captured here.
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Free Worldwide Shipping & Delivery
Our customers enjoy free shipping for Gokou matcha koiai, with the most cost-effective carrier available for your country. Typically, delivery takes 5-7 days for customers in the U.S. and E.U. For customers in other regions, delivery may take up to 10 days. If you need your order delivered more quickly, we offer expedited shipping options for an additional fee.
Order issues
If you have any issues with your order, please contact our customer service team via email at info@nioteas.com for the quickest response. Alternatively, you may also contact us through direct message on Instagram at @nio_japanese_green_tea for quick queries.
Payments
We accept major credit cards, PayPal, and Apple Pay. If you prefer to pay via bank transfer, please select this option at checkout, and we will provide you with the necessary details. Once we receive your payment, we will ship your order.
Returns & Refunds
At Nio, we strive to provide our customers with a positive tea experience. If you are not satisfied with the tea you receive, please let us know, and we will happily offer you a replacement.
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