The World of Japanese Tea | The Depth of Flavor That Changes with Origin, Variety, and Brewing Method

The Basics of Japanese Tea | A Classification Guide You Think You Know But Don't

All Japanese tea is made from the same plant called "Camellia sinensis." The diverse types of tea—sencha, gyokuro, matcha, bancha, hojicha, and genmaicha—are created through different processing methods after harvest. Sencha accounts for approximately 75% of Japanese tea and is produced by steaming, rolling, and drying the picked tea leaves.

Gyokuro is a premium tea made by covering the tea garden for about 20 days before harvest, blocking sunlight to prevent the breakdown of theanine, a key umami component. Similarly, 'kabusecha' is covered for only about one week, offering a flavor between sencha and gyokuro. 'Tencha,' the raw material for matcha, is also cultivated under shade. After steaming, it is dried without rolling, then ground into powder with a stone mill.

Hojicha is sencha or bancha roasted at high temperature, characterized by its roasted aroma and low caffeine content. Recently, hojicha lattes have become popular among younger generations. Genmaicha is a blend of bancha or sencha with roasted brown rice, prized for its unique roasted aroma and light flavor.

Japan's annual tea production is approximately 70,000 tons. Shizuoka Prefecture accounts for about 36% of national production, followed by Kagoshima Prefecture at about 33%, and Mie Prefecture at about 7%. These three prefectures cover approximately 76% of national production, though Uji tea from Kyoto, Yame tea from Fukuoka, and Sayama tea from Saitama are also highly regarded.

Flavor Varies by Origin | Japanese Tea as Terroir

Just as wine has terroir, Japanese tea's flavor is significantly influenced by its origin's climate, soil, and altitude. In the tea sommelier world, the concept of 'single-origin' is spreading, bringing attention to a new way of enjoying Japanese tea that celebrates the individuality of each origin.

Shizuoka Prefecture is Japan's largest tea-producing region, with diverse brands such as Honzan tea, Kawane tea, Kakegawa tea, and Tenryu tea. The mild climate and temperature differences in mountainous areas create tea with excellent balance between umami and astringency. Kawane tea, in particular, is cultivated at altitudes of 300–600 meters, where the misty environment acts as natural shading, resulting in refined sweetness and crisp aroma.

Kagoshima Prefecture's warm climate allows it to ship the earliest new tea of the year ('hashiri shinscha') in early April. Kagoshima tea, represented by Chiran tea, is characterized by its robust umami and vibrant green color. Volcanic ash soil nurtures mineral-rich leaves, and much of it is finished using deep-steaming methods, resulting in a rich, full-bodied flavor.

Uji tea from Kyoto Prefecture is a historic origin where tea cultivation is said to have begun in the Kamakura period under the Buddhist monk Myōe. The quality of its matcha and gyokuro is unmatched in Japan, consistently ranking at the top of national tea competitions. Uji's shade-growing technique has over 500 years of history, and the distinctive sweet aroma called 'kabuseka' is unique to Uji tea. Premium gyokuro priced at 3,000–10,000 yen per 100 grams is not uncommon.

Enjoying Varieties | The World Beyond Yabukita

When it comes to Japanese tea varieties, 'Yabukita' dominates with an overwhelming share, accounting for approximately 72% of the nation's tea plantation area. Selected by Sugiyama Hikosaburo in 1908, this variety is the standout achiever with three strengths: cold resistance, high yield, and balanced flavor. However, in recent years, interest in distinctive new varieties has grown.

'Saemidori' is a variety with vibrant green color, refined sweetness, and strong umami, with cultivation expanding mainly in Kagoshima Prefecture. 'Tsuyuhikari' is characterized by fresh aroma and clean umami, with its deliciousness enhanced when brewed as cold tea.

Particularly noteworthy are 'aroma-focused varieties.' 'Sōfū' offers floral notes reminiscent of Taiwan's Pouchong tea, while 'Benifūki' is suitable for black tea production, rich in methylated catechins, and gaining attention as a hay fever remedy.

Specialty shops for single-origin Japanese tea are increasing. At Tokyo's 'Sakurai Hojicha Laboratory' in Omotesando and 'Senchado Tokyo' in Shibuya, you can enjoy tea leaves clearly labeled with origin and variety for around 800–1,500 yen per cup, and purchase tea leaves as well.

The Science of Brewing | Mastering Taste Through Water Temperature and Extraction Time

Water temperature and extraction time are decisive factors in Japanese tea's flavor. This has clear scientific basis. Umami components in tea leaves (theanine and glutamic acid) dissolve well even at low temperatures, while astringency components (catechins) dissolve rapidly at high temperatures above 80°C. In other words, by adjusting water temperature, you can freely control the balance between umami and astringency.

The optimal way to brew gyokuro is with lukewarm water at 50–60°C, steeped for 2 to 2.5 minutes. Use about 5 grams of leaves per person and 50–60 ml of water. The surprisingly small amount of water maximizes the rich umami. The first steep offers umami, the second steeps offer a harmony of umami and astringency, and the third steep offers astringency and crispness—each re-steep reveals a different character.

For sencha, water at 70–80°C for 1 to 1.5 minutes is ideal. Use 3–5 grams of leaves with 180–200 ml of water. Pouring boiling water into another vessel first reduces the temperature by about 10°C, a technique for achieving the right temperature. The higher the quality of sencha, the more its sweetness and umami shine when brewed slowly at lower temperatures.

For hojicha and bancha, hot water at 95–100°C steeped for just 30 seconds to 1 minute is optimal. Brewing at high temperature brings out the roasted aroma and keeps caffeine content relatively low.

Cold-brewed tea, recently growing in popularity, is made by steeping 10 grams of leaves in 1 liter of cold water in the refrigerator for 6–8 hours. With minimal astringency, it offers a smooth flavor with pronounced sweetness and umami. It's perfect for summer enjoyment and ideal for those seeking theanine's relaxation benefits.

Enjoying Japanese Tea Deeply | Choosing Teaware and New Ways to Enjoy It

Japanese tea's flavor changes depending on the teaware used. Kyusu (teapots) are typically made of ceramics from Tokoname (Aichi Prefecture), Banko (Mie Prefecture), Arita (Saga Prefecture), and similar regions. In particular, Tokoname's red clay kyusu is said to have the iron oxide in the clay react with tea's tannins, mellowing its astringency.

When selecting a kyusu, the first consideration is the type of filter. Those with a ceramic 'sashame' strainer built-in preserve the leaves' delicate flavor, unlike metal filters. A capacity of around 200 ml for one person or 350 ml for two people is most practical. Priced around 3,000–15,000 yen, a quality kyusu becomes a lifelong tool.

Teacups (yunomi) also influence flavor perception. Thin porcelain showcases tea's color beautifully and allows you to experience delicate aromas directly. Thick ceramic cups retain heat well, creating a warming experience that extends to the hand. Using a small gyokuro cup for gyokuro naturally cultivates the practice of slowly savoring small quantities.

A newer way to enjoy Japanese tea is pairing it with sweets. Exploring combinations such as gyokuro with white bean confectionery, deep-steamed sencha with chocolate, and hojicha with cheesecake, tailored to each tea's character, offers a fresh experience.

Japanese tea is one of the most familiar and profound aspects of Japanese culture, enjoyable from as little as dozens of yen per cup. Start by checking the origin and variety of the tea you currently drink, then try adjusting the water temperature slightly. You'll notice how dramatically the flavor changes with the same leaves. SOROU.JP will continue to share information about cafes and specialty tea shops where you can enjoy Japanese tea, so be sure to check back.