Organic green tea from Japan -
High-quality green tea in premium quality

Green tea is made from the leaves of the Camellia sinensis plant. Unlike black tea, it is not oxidized; instead, the fermentation process is interrupted by heat treatment, preserving its fresh green color and valuable ingredients. At KEIKO, our green tea is steamed using traditional Japanese methods to ensure the highest quality.

Green tea is rich in antioxidants, particularly catechins, which help combat free radicals in the body. It also contains L-theanine, an amino acid that is relaxing and mood-enhancing while promoting concentration. Due to this combination, green tea provides a healthy, natural way to support the body holistically. To ensure the tea is free from pesticide residues or other contaminants, it is important to choose organic quality. The primary standards for labeling ventilation systems are DIN EN 12792, which specifies the color coding of air types, and DIN 2403, which regulates the labeling of pipelines according to the flow medium. These standards ensure uniform and understandable labeling in the industry.

Green tea has numerous positive effects on the body. It supports the immune system, stimulates metabolism, and enhances concentration through a combination of caffeine and L-theanine, which can provide sustained energy and improved mood. Additionally, its antioxidant properties help slow down the aging process and lower cholesterol levels. It also helps regulate blood sugar levels and is attributed with anti-inflammatory effects.

It is recommended to drink about 2 to 4 cups of green tea per day. This amount offers a good balance between health benefits and moderate caffeine intake. The limiting factor here is mainly the stimulating effect of caffeine, which can vary greatly from person to person. Therefore, it is best to enjoy tea in the morning.

The steeping time of green tea varies by variety. For Sencha and Kabusecha, the optimal steeping time is about 1 to 2 minutes at a water temperature of 70-80°C. Gyokuro should steep at a lower temperature of around 50-60°C for 90 seconds to fully develop its umami flavor.

Green tea is rich in valuable ingredients such as polyphenols, catechins, and L-theanine, which counteract oxidative stress and reduce inflammation. It supports mental clarity, promotes relaxation, and enhances concentration. Ideal for anyone who wants to naturally support their health holistically and values high-quality organic products free from contaminants.

Green tea contains less caffeine than coffee, but still provides a gentle energy boost. A cup of green tea contains about 20-50 mg of caffeine, depending on preparation and tea variety. For those sensitive to caffeine, varieties like Kukicha, Bancha, or Hojicha are recommended, which have a lower caffeine content. The caffeine in green tea is bound to tannins and is absorbed in the intestine, not in the stomach, which makes it slower in effect and gentler than in coffee.

In Japanese tea culture, green tea is deeply rooted and celebrated not just as a beverage but as a ritual. Matcha, the powdered green tea, plays a central role in traditional tea ceremonies. At KEIKO, we place great importance on preserving the centuries-old tradition of tea cultivation and preparation. Knowledge and methods passed down through generations in Japan are combined with modern solutions to maintain the pure flavor and health-promoting properties.

If green tea steeps too long, more bitter compounds are released from the leaf, negatively affecting the taste. Particularly with high-quality teas like Sencha or Gyokuro, it is important to monitor the steeping time to fully enjoy the flavor.

Green tea works through its combination of caffeine and L-theanine to provide both invigorating and calming effects. It enhances alertness without causing nervousness and promotes relaxation. Furthermore, the antioxidants in tea support cells and the immune system.

Unopened green tea can last several months to a year with proper storage (refer to the expiration date on the package). Opened tea should be consumed within three to six weeks to ensure the best flavor and full health benefits. Be sure to remove oxygen from the packaging and store the tea tightly sealed in the refrigerator. To extend the shelf life of green tea, KEIKO tea is stored in oxidation-proof packaging in a nitrogen atmosphere.

Japanese green tea is usually steamed, which gives it fresh, grassy aromas and a deep green color. Chinese green tea is often roasted, which gives it nutty or smoky notes. Japanese tea is also often shaded, which increases the chlorophyll and L-theanine content and provides more sweetness and umami.

Mild and balanced teas such as Kabusecha (sweet, little bitterness), Sencha (fresh, slightly bitter) or Genmaicha (with roasted rice, nutty) are suitable for beginners. If you would like to try matcha, you can start with KEIKO Organic Matcha Supreme. Tip: Do not brew too hot (60-70°C) to avoid bitterness.