Pure, Soothing, Powerful Tea since 2004

Pure, Soothing, Powerful Tea since 2004



Spreading Hope 

Our Story

SEI MEE TEA®, a family business in rural Oregon, was created by its founder, Kiyomi Koike in 2004. As a cancer survivor’s wife, she decided to share her discoveries about green tea with American folks.

“My passionate green tea journey started when my husband, Bill, was diagnosed with colorectal cancer in 2001. The diagnose came with only a 50% survival chance and that itself put me in anxiety. That was 3 months after I gave birth to our second child. My swinging hormone level did not help either. And then, my mother called me and shared their secret–they were hiding it from me until the baby was safely delivered. So, my mother told me my father was ill from cancer and his doctor told them he would live only for a few more months.

I had not seen my father for many years because he didn’t want to accept my international marriage. All of a sudden, the reality of losing important men in my life hit me. I was scared, confused, and depressed. One of my friends kindly invited me to stay with her probably because she thought it was dangerous to leave me alone. I remember I sat in her living room but felt like sitting in the complete darkness.

While my husband was in the hospital, I was alone with our son, who was almost 3 years old then, and our newborn daughter. My depression must have been obvious to this little boy too. One day, he was watching me sobbing with my tiny newborn in my arms. He quietly stood by me and gently patted my shoulders to comfort me. And he said with his gentle voice, “It’s O.K., Mommy; it’s O.K.” That’s when I decided to “do something” and move forward.”

The first thing Kiyomi did was this: she told Bill to drink 10 cups of freshly brewed green tea every day. She was born and grew up in Japan–it was a well-known fact that you need to drink 10 cups to get health benefits from brewed green tea. She bought tea bags at her local grocery store. Bill was not fond of the flavor of the brewed green tea, but he gave it a try for himself and for his family.

He managed to gulp 10 cups down the first and the second day. But on the third day, he stared into Kiyomi’s eyes and said, “I can’t drink this anymore—I’d rather die.”

That day Kiyomi started her intensive research for a better tea and a more efficient way of drinking green tea. She searched here in the U.S. and no luck. She talked to her friends and family in Japan. That was when SEI MEE TEA’s signature product, organic Sencha Green Tea Powder, Edible Green® was born.

This tea came into Kiyomi and Bill’s life like a beam of light of hope. Why? Because consuming the entire tea leaf in fine powder form is by far the most efficient way to enjoy green tea’s healthful value. And the powder tasted way better–not bitter. On top of that, you do not wait for a perfect steeping time!

Edible Green® is Sencha powder; it is easy to prepare—just mix with water, hot or cold. Many people asked if the powder was an “instant” tea. No, it was not an instant tea. Instant tea is made from brewed tea. Rather, it was 100% organic pure green tea leaf ground into a fine powder.

She kept studying about green tea. And she learned Sencha powder is even better than Matcha for cancer patients because Sencha powder has more antioxidants and less caffeine than Matcha.

After one sip, Bill said, “I can drink this,” and he started to drink Edible Green® every day. When Bill told his oncologist about the green tea in 2002, he didn’t turn down the idea, but he was not enthusiastic at that time.  He just said, “It won’t do any harm. You can drink green tea if you want to.”

Later on, as Bill’s treatment went on and he was showing progress. Bill again explained to his oncologist about the green tea. His oncologist seemed interested this time.

Young Kana in Tea fieldAfter 5 years passed, his oncologist said to him, “I did a lot of research about green tea. You are clear—you don’t have to come back to see me anymore, but DON’T STOP DRINKING YOUR GREEN TEA!”

The left photo was taken during their first visit to an organic tea farm in Japan.  Kiyomi’s daughter was 5 then.  She is now 17 (picture below).  And her dad is still with her and her family!

Bill is now cancer-free for more than 19 years. Did Green Tea, Sencha Powder Tea, help him? Absolutely! The Sencha Powder Tea brought powerful antioxidants to his body. But also, with his decision to drink this green tea he regained the power of “control in life.” With the concentrated green tea in his hand, he was back in the driver’s seat of his life. 

Kana in tea field

Kiyomi’s desire blossomed. She did marketing researches by standing on a street and asking strangers questions, such as how they drink teas and why, and how often, etc. She realized how little people knew about tea and its benefits. Since then, she has been enjoying sharing her discoveries.

And she believes in the “emotional” side of this extraordinary powder. Sencha Green Tea Powder brought more than antioxidants. That is what Kiyomi would like to bring into your life. After seeing and hearing many of her customers’ amazing stories with SEI MEE TEA, Kiyomi made a decision to become a certified wellness coach. She earned her certificate in 2019. You are what you eat and…think. Who knew Green Tea could change Bill’s and Kiyomi’s life?

So, here’s Kiyomi’s message to you: “Green Tea made our life fuller. Come and join us!”



Survived & Thriving


Our Mission

Our Vision

SEI MEE TEA believes quality green tea is one of the simplest things people can incorporate in their everyday life to enhance their wellness.

When people find joy and excitement in using quality green tea, people eat healthier and feel happier.

Our Mission

To bring joy, excitement, and health with green tea, we do 3 things every day: 1. Offer quality products, 2. Provide information on how to choose the best tea for health, and 3. Provide information on how to use tea to enhance wellness.

Our Values

For us, green tea represents HOPE. It is important for us to offer the best and safest green tea to America, the home of our family.

Every Order with Referral

Giving Back to Naturopathic Oncology

Register now and

Earn 100 Loyalty Points

Earn 1 point for every dollar you spend on products

Redeem points for a discount


Get 15% off Coupon


Sign up for our free newsletter and get 15% off coupon


Referral Program

Referral gives you an extra discount & your order automatically generates a donation to help Naturopathic Oncology



Latest From Our Blog

5 Ways Green Tea Helps Women’s Health

Green Tea is one of the foods that has been systematically studied by scientists. These studies show abundant evidence that Green Tea promotes good health with beneficial properties, such as anti-inflammatory and anti-carcinogenesis. While both men and women share...

Stress, Cancer Risk, and Green Tea

Did you know 1 in 8 women in the U.S. gets diagnosed with breast cancer in her lifetime? And the odds are the same for men to get diagnosed with prostate cancer in their lifetime. One in 5 Americans will get skin cancer, which is the most common cancer in the U.S....

Milk and Green Tea

You may have seen or heard this before: "You shouldn't mix milk with green tea as milk proteins bind with green tea antioxidants and negate the green tea health benefits." This is what we once believed to be true. But recent studies have discovered that "binding" is...

Aluminum and Green Tea

Aluminum is one of the essential elements for the root growth and development of tea plants, Camellia sinensis. Thus, aluminum exists naturally in Camellia Sinensis. The toxicity of aluminum is controversial. Some studies suggest aluminum may increase the risk of...

Is Sencha Powder cancer-fighting tea?

Have you ever wondered if Sencha powder really kills cancer cells? Is the tea you are drinking a cancer-fighting tea? The answer is YES, and we have the proof, thanks to a team of German scientists, who conducted thorough, in-depth research on our Edible Green® Sencha...

Healthy Vegan Thanksgiving Recipes

We are grateful to be able to live with many options. When you have options for something that offers both health and flavor, it is a no-brainer which option to choose. We think these easy recipes are such options for you! Roasted Tuscan Tofu & Cauliflower Gravy...

Drink Recipes to Enjoy during Holidays

healthy-drink-recipes-to-enjoy-during-holidays-2Download And stay healthy! Click the button below to download the recipes. I hope it makes a good addition for you to include in your healthy SEI MEE TEA gift to your loved ones. Minam River Lodge Classic Matcha Lemonade...

Arugula Caesar Salad with Air-fried Mushroom & Fresh Tomatoes

We love this Asian flavor Caesar Salad--we love it because it is easy to make, delicious, and healthy. My husband, Bill, ate a lot of cruciferous vegetables while recovering from cancer. (If you haven't read our story, please read it here.) I cooked a lot of...

Anti-inflammatory spiced Cauliflower Steak

Turmeric shows up in 4 out of 5 categories of self-defense systems in "Eat to Beat Disease" written by Dr. William Li. Green tea is one of the "grand slammers," which means Green tea offers all 5 capabilities of self-defense systems we naturally have. Our...

Stuffed Tofu with No Sugar Teriyaki Sauce

Looking for a healthy but delicious dinner? Try this recipe--Tofu stuffed with meatless 'meat' stuffing is crisp but no oil is used. 'Matcha' coating is the secret to the crispness. You would love to use a 'steak knife' to enjoy this flavorful, substantial Tofu. It's...

Coconut Cauliflower Rice & Pineapple Shish Kabob with Mango Mustard Sauce

Ingredients: Coconut Cauliflower Rice 2 c Cauliflower Florets, grated, chopped, or processed into 'rice-size' pieces 2 Tbsp. Unsweetened Coconut Flakes Pineapple Shish Kabob 12 1" pieces Fresh Pineapple* (See below for how to cut fresh pineapple.) 1 Red Bell Pepper,...

‘Matcha’ Spice

Would you like to reduce the amount of salt in your healthy diet? Try 'Matcha' Spice--it's salt-free, but it brings a pleasant flavor from the foods you add it to, thanks to the 'umami' that Matcha or Sencha powder produces in the blend. Here's the simple recipe. Just...

Matcha & Sencha Powder Vegan Recipes for Holidays

I made a couple of comfort foods, which can be a part of your holiday meal this winter! The first one is "Hearty Tangy Stuffed Acorn Squash." In this recipe, green tea powder will be used like an "instant soup stock." The other one is an easy but delicious...

8 Techniques to Use Matcha or Sencha Green Tea Powder in Everyday Meals

One of the frequently asked questions is, "Can I cook with green tea powder?" Green tea is actually versatile to use in cooking. Like herbs and spices, once you know what type of foods and how much to use, it is easy to incorporate Green Tea goodness into your...

Sencha-Infused Ruby Chocolate Mousse

Try our original recipe created by Chef Alexis at SyncopatedNYC.com: Sencha-Infused Ruby Chocolate Mousse with Fall Fruit Compote and Sencha Candied Nuts for flavor and empowered nutrition! This beautiful dessert was inspired by SEI MEE TEA sencha powder and...

Green Tea Date Vegan Jello

Do you know Agar? It's made with seaweed and works like gelatine but it is plant-based. When I was a kid, I enjoyed "Anmitsu," which is a popular dessert made with "Kanten." Kanten, which is the Japanese name for Agar, is translucent like gelatine, but it is firmer...

No Caffeine “Chocolate” Pudding

If you are allergic to chocolate but you would enjoy the rich chocolaty flavor, this is the dessert for you! This dish was inspired by the recipe of Dr. Melissa Mondala, who is a holistic, plant-based physician for family medicine, lifestyle medicine, and primary care...

Loaded Sweet Potato Supreme

Savory, decadent, satisfying supper can be ready easily with an oven and a mason jar. Different salads as a substantial and healthy topping would make this delicious plant-based meal in a completely different way. This dish was inspired by the recipe of Dr. Melissa...

Delicious Vegan BROWNIES

Vegan + Dark & Rich + Tastes like Mocha (but no coffee, no chocolate!) Yes, we have to admit sometimes we really need to taste the rich, moist, and dense brownies. The satisfaction of such luxury is beyond description. These are the healthiest brownies without...

Easy Healthy Date Paste

Make healthy date paste at home! Dates are high in fiber and polyphenols. As it offers such a satisfactory sweet taste, it works great as a natural 'substitute' for highly processed sugar. One drawback of dates is 'hard' to mix in because it is...hard! You could chop...

Pico de Gallo made with Sencha Powder Spice Blend

Sencha powder is, like matcha, extremely versatile in cooking. However, you may be wondering what spices would go well with Sencha powder. This recipe uses Sencha Powder Spice Blend, which is also very versatile. Sencha powder is naturally yellowish green--compared to...

Subscribe & Keep Learning