How Matcha Is Made: Understanding the Production Cycle

Matcha is a uniquely Japanese tea, not only in flavour but also in how it is produced. Unlike many beverages that are manufactured year-round, matcha follows a natural agricultural cycle, shaped by the growth of tea plants and traditional processing methods.

Understanding this process helps explain why matcha tastes the way it does—and why quality depends more on careful production than on timing alone.

Tea Leaves and the Spring Growing Cycle

Matcha is made from tea leaves called tencha. These leaves come from the same tea plant as other green teas, but they are grown using a special method.

In spring, tea fields intended for matcha are covered with shade cloth to reduce sunlight. This slows leaf growth and increases amino acids such as L-theanine, which contribute to matcha’s smooth, mellow, umami-rich flavour.

Harvesting and Processing

When the leaves are ready, they are harvested and gently steamed to stop enzymatic fermentation. This step preserves the leaves’ natural green colour and fresh character—one of the key differences between Japanese green tea and fully oxidised teas such as black tea.

After steaming, the leaves are dried and refined to remove stems and veins. The remaining soft leaf material is known as tencha.

From Tencha to Matcha

Tencha becomes matcha only when it is finely ground, traditionally using stone mills. This process is slow and precise, producing a powder with a smooth texture and balanced flavour.

Importantly, tencha can be ground into matcha when needed, allowing producers to maintain quality and freshness over time without rushing the process.

What Defines Good Matcha

Rather than being defined by a single moment in the calendar, good matcha is characterised by:

• Careful cultivation
• Proper steaming and drying
• Skilled grinding
• Appropriate storage

When these elements are well controlled, matcha maintains its flavour, colour, and aroma over time.

A Thoughtful Approach to Japanese Tea

Japanese tea culture places great value on patience, balance, and respect for natural processes. Matcha reflects this philosophy—it is not about speed or constant change, but about consistency and craftsmanship.

At Iwata Japan Shop, we focus on sharing authentic Japanese tea made with care and tradition, so you can enjoy matcha as it is meant to be: smooth, vibrant, and deeply satisfying.