Tea Blog

If you’ve explored Japanese green tea, chances are you’ve encountered the word umami. Today, the term appears frequently in discussions of tea, food, and flavor science, but that wasn’t always the case.

For many people outside Japan, umami remained relatively unknown until the early twenty-first century. Yet the concept has been part of scientific discussions about taste for more than a hundred years.

Alongside sweet, sour, salty, and bitter, umami is now widely recognized as one of the five basic tastes. And for tea lovers, it plays an especially important role in understanding why certain Japanese green teas taste so distinctive.

What Is Umami?

Umami is often described as a savory, brothy, rich, or deeply satisfying taste.

The concept was first proposed in 1908 by Japanese chemist Kikunae Ikeda, who sought to identify a flavor commonly found in foods such as seaweed broth that could not be adequately explained by the four traditional taste categories.

The word umami is usually translated as “pleasant savory taste” or “deliciousness.”

While some jokingly interpret it as simply meaning “yummy,” the scientific concept refers to a specific taste associated with certain amino acids and related compounds.

Why Umami Wasn’t Widely Known in the West

Although the concept of umami has existed for more than a century, it gained widespread attention in Western food culture only relatively recently.

For years, chefs, food writers, and scientists discussed savory flavors using various descriptions without consistently identifying umami as a separate taste category.

As Japanese cuisine became more popular internationally and food science advanced, awareness of umami increased dramatically.

Today, the term appears regularly in discussions of everything from ramen and mushrooms to cheese, tomatoes, and tea.

Foods Naturally Rich in Umami

Many foods contain compounds that contribute umami flavor.

Some of the most frequently cited examples include:

• Seaweed and kelp
• Mushrooms
• Tomatoes
• Soybeans and soy products
• Aged cheeses
• Certain seafoods
• Fermented foods
• Broths and stocks

These foods often share a satisfying depth of flavor that makes them particularly appealing in cooking.

The compounds responsible for umami frequently enhance and complement other tastes as well.

Tea and Umami

Perhaps surprisingly, tea can also be a significant source of umami.

Among the various tea categories, Japanese green teas are often especially noted for their savory character.

This is one reason many tea drinkers describe certain Japanese teas as tasting very different from Chinese green teas or black teas.

Rather than emphasizing floral, fruity, or malty characteristics, some Japanese teas offer flavors that are:

• Savory
• Marine
• Brothy
• Vegetal
• Sweet
• Richly umami

These qualities can be surprising to new tea drinkers but are highly prized by enthusiasts.

Why Japanese Green Tea Has More Umami

The answer lies partly in cultivation and processing.

Many premium Japanese teas are produced using techniques that encourage the development and preservation of amino acids within the leaves.

One particularly important compound is L-theanine, an amino acid strongly associated with sweetness, smoothness, and umami perception.

Shaded teas often contain elevated levels of these compounds because reducing sunlight slows certain chemical changes within the plant.

This helps preserve the substances responsible for the tea’s sweet and savory character.

Gyokuro: A Showcase of Umami

Few teas illustrate the concept of umami better than Gyokuro.

Considered one of Japan’s most prestigious green teas, Gyokuro is shaded for several weeks before harvest.

This process encourages the accumulation of amino acids while reducing bitterness.

The resulting tea often displays:

• Deep sweetness
• Rich body
• Pronounced umami notes
• Long-lasting flavor
• Minimal astringency

For many tea enthusiasts, Gyokuro represents one of the purest expressions of umami available in a beverage.

Matcha and the Science of Umami

Matcha also plays an important role in discussions of tea and umami.

Because matcha is a powdered tea consumed in its entirety rather than merely infused, drinkers experience all of the compounds present within the leaf.

Researchers studying matcha and other Japanese teas have identified several compounds that contribute to their distinctive flavor profile.

Scientific investigations have highlighted the importance of substances such as:

• L-theanine
• Glutamic acid
• Certain organic acids
• Various amino acids

Together, these compounds help create the characteristic savory quality associated with premium Japanese teas.

Why Umami Matters to Tea Drinkers

Understanding umami can deepen appreciation for tea.

Many beginners initially evaluate tea using familiar categories such as sweetness, bitterness, or astringency.

Recognizing umami introduces an entirely new dimension of flavor.

Once tea drinkers become aware of it, they often begin noticing subtle savory notes that previously escaped attention.

This can make tasting sessions more interesting and help explain why certain teas feel unusually satisfying even when they are not particularly sweet.

The Bottom Line

Umami may be a relatively recent addition to many tea drinkers’ vocabularies, but it has been part of flavor science for more than a century.

Identified by Japanese scientist Kikunae Ikeda in 1908, umami represents the savory fifth taste and plays an important role in many foods—including some of the world’s finest teas.

Japanese green teas such as Gyokuro and Matcha are especially renowned for their umami character, thanks to their high concentrations of amino acids and carefully controlled cultivation methods.

The next time you brew a premium Japanese green tea, pay attention to more than sweetness or bitterness. You may discover a rich, savory quality that helps explain why these teas are so highly prized around the world.

See more of William I. Lengeman’s articles in this archive of tea commentary, science, and tea culture articles.

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