1. What is Matcha?

Matcha means ‘Rubbed or Ground Tea’ and is the Japanese term for the precious powdered green tea, traditionally reserved for the Japanese Tea Ceremony (Sadō).

The process of manufacturing premium matcha begins with choosing the right place for the cultivation of the tea plants (Camellia sinensis). The soil and climatic conditions play a key role in the final flavor and quality of the tea. Mountainous and hilly regions provide the perfect climate and morning mists needed for the cultivation of tea.

The matcha tea plants are shaded from direct sunlight for about 2-4 weeks before harvest. This increases the chlorophyll and L-theanine content making for a smooth taste and a rich vibrant green color. L-theanine is an amino acid specific to green tea that provides sweetness in flavor. It is the main reason why high quality green tea tastes less astringent and is more pleasant to the palate.

The different types of Japanese tea are commonly graded depending on the quality and the parts of the plant used. High quality matcha is always hand-picked to assure that only the unopened tea bud and the accompanying finest, top two leaves are chosen. The tea-leaves selected to become matcha are called tencha. The leaves are then carefully steamed to prevent the nutrients from oxidation and keep the tea fresh and green. After that, all the rough fiber, such as stems and veins, are removed to assure the fine powdery consistency and the sweet flavor typical for a great matcha. The tencha leaves are then slowly ground up in traditional granite stone-grinders to a very fine, talc-like powder ‒ matcha!

Since matcha is extremely prone to losing nutrients, color and freshness by being exposed to light or air, proper storage and packaging is crucial to assure highest quality.

2. How can I determine matcha quality?

You can tell the quality and freshness of matcha by the color, the flavor and by how well it mixes.
• the greener and more vibrant is the color (for both the powder and the prepared cup)
• the sweeter it will taste
• the fuller the flavor
• the ‘greener’ the flavor

3. What is the difference between organic and non-organic matcha? Is it just different leaves?

Different leaves yes, but actually different tea fields entirely. Tea leaves destined for DōMatcha’s Certified Organic matcha have to satisfy a number of organic regulations, such as containing no pesticides, using only natural fertilizers, protecting the fields from environmental contaminants, using only natural pest control methods, keeping strict log books and more. DōMatcha’s organic matcha adheres to the regulations of JAS/JONA/OCIA and IFOAM. Organic DōMatcha is also certified by AB (Agriculture Biologique). Organic products carrying this logo must contain more than 95 percent organic components. Organic DōMatcha is also  certified by Eu Algriculture, the governing body for the European Community. Organic DōMatcha is also certified Kosher.

Non organic matcha doesn’t have to go through all these regulations. Although it is still very ‘clean’, we test every batch for chemical residue and there is never any detection of pesticides, as we use only natural fertilizers.

The history of organic matcha began in 1972 with our producer, who was instrumental in overturning the conventional wisdom of the Japanese green tea industry about the need for organic green tea certification. This all started in the Uji Region of Japan ‒ where matcha originated. It took 20 years of determination, but finally in 1992 our supplier was rewarded by receiving the first ever JONA Organic Certifi-cation for tea leaves. JONA (Japan Organic and Natural Foods Association) is recognized around the world for its high organic standards.

4. How does DōMatcha make you calm?

The L-theanine amino acid in matcha increases alpha waves in the brain. Alpha waves help us to feel calm, creative, alert and mentally focused.

5. Is DōMatcha addictive?

If feeling good and energized is addictive, then yes!

6. Where can I find DōMatcha?

DōMatcha is available directly through us at SeaRiver. Get in touch to find out more

7. How do I prepare DoMatcha?

Preparing a cup of delicious DōMatcha is quick and easy ‒ and fun!

Traditional Method:
To enjoy a traditional style matcha, make it your own little ceremony, by using a traditional bamboo scoop, bamboo whisk and a beautifully decorated ceremonial drinking bowl. Remember ‒ every cup is special!

  1. Place two bamboo scoops (1/2 teaspoon) of DōMatcha into a bowl.
  2. Add 2 to 3 oz. / 60 to 90 ml of pre-boiling water (175F/80C) to your DōMatcha. Using a bamboo whisk, briskly whisk in a W motion until a froth forms on the top.
  3. Add more water to taste if desired (up to 8oz/250ml). Only add more water AFTER whisking.

Delicious Variations…
You can also mix DōMatcha into hot or cold almond milk, regular milk, juice or directly into a water bottle for a refreshing drink any time of day!

For other recipes, check our website at:

8. What is the difference between the Ceremonial matcha and the 2nd Harvest matcha?

The DōMatcha Ceremonial grade of matcha is handpicked in the spring at the first flush, only the brand new top leaves are chosen. These leaves render a very smooth but strong flavor, considered to be one of the top grades of matcha. As a result it commands a higher value in the marketplace. The 2nd Harvest DōMatcha is handpicked in August; the leaves for 2nd Harvest have been on the tea plant longer and render a more astringent flavor. As a result it has a lower value. The price of matcha reflects the quality of various grades of matcha. If you are a purist or traditionalist and enjoy your matcha with just hot water, then the Ceremonial will give you the better tasting matcha. If you are going to use your matcha in a latte or a blender drink, then you may as well go for value and use the 2nd Harvest.


9. Once I open a tin of your matcha, should I refrigerate it?

Keep matcha in the fridge, inside the little foil pouch in the tin. Prior to being stone ground into matcha powder, our tencha leaves are
stored slightly above freezing. DōMatcha is like a raw, living food. Keeping it refrigerated will help it stay fresh longer.

10. I just purchased your product and was shocked at the bright green color. Is coloring added?

No, that bright green color is the beauty of a good quality matcha. It is the product of the way DōMatcha is grown, harvested and
processed. Young leaves are picked at first flush, and only the top leaves are used (for DōMatcha). These small leaves are cleaned, stored
slightly above freezing, then stone ground into a naturally vibrant green powder.

11. Will removing DōMatcha from its silver pouch compromise the tea in any way?

The tin is made from aluminum to make it recyclable. We suggest keeping our matcha inside the foil bag which is food safe and then inside the
tin, rather than having it stored directly next to aluminum. This helps keep it fresher longer as well. Some matcha brands out there do not have
the food safe bag and the matcha powder is in direct contact with aluminum. We do not know for certain if this is could be a health issue, but
we are on the side of precaution (and we are on your side of precaution).

12. Does DōMatcha contain gluten?

No, DōMatcha is gluten-free.


13. Can matcha interfere with the absorption and activity of prescription medication?

Since matcha is not a supplement but actually a whole food it does not have any more contraindications with medication than other foods like greens or teas like regular green tea. It is always recommended to check with a doctor before starting a new food or product when on medication to be safe.

14. When are the best times to drink matcha? I am concerned about drinking matcha in the evening and then sleeping well.

You definitely have to be careful with when you’re drinking matcha, as it flows through your bloodstream 4 - 6 hours. It is not recom-mended to drink matcha less than 4 hours before bedtime. Initially, try matcha during the day to see how it affects you.

15. What happens when this tea upsets my stomach? Is this normal?

Initially, the stomach can get a bit unsettled as the body adjusts to this powerful tea. It is not recommended to drink it on a completely empty stomach.

16. What happens when this tea upsets my stomach? Is this normal?

Regarding Fukushima, we understand your concern. We educate people every day on the benefits of matcha and caution them to research their matcha company before buying, as not all are alike.

Most of our matcha is grown in Kagoshima. Kagoshima is extremely far southwest of Fukushima and on a different island. Our producers test the leaves, as well as have an independent lab test done. Once the matcha arrives into our warehouse, we test again. We test the unopened tin, and then test the powder directly. We bought a very expensive radiation detector designed specifically for food. Finally we send the matcha to a lab in Illinois ‒ just so we have North American independent lab proof as well. If our matcha was not safe to drink it would never make it onto the shelves. We will continue to test long into the future. We will be  happy to send the tests results for your review. Our matcha comes backed with over 700 years of matcha expertise from our producing partners and our tea master.
Please view the map below. Kagoshima and Kyoto are very far away from Fukushima, 95% of our matcha is grown in Kagoshima which is on the island of Kyushu. About 1,000 miles or so from Fukushima.






SiSú, Abec Enterprise Centre, Unit P10 Kilbride Ind. Est,

Arklow, Wicklow. Eircode: Y14 RX57

Phone: (+353) 1525 2022

 Email: hello@sisu.ie

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