Instant Coffee Day (Insutanto Kōhī no Hi)

What Is Instant Coffee Day?

August 11 is "Instant Coffee Day" each year, commemorating the historical fact that on August 11, 1960 (Showa 35), Morinaga & Co. launched Japan's first domestically produced instant coffee. Until then, "just add hot water" coffee had been imported, and this launch marked a major turning point that brought it into everyday Japanese households. The day celebrates how this convenient way to enjoy real coffee aroma and flavor brings a moment of "intellectual rest" into daily life.

The "1960 Revolution" and Technological History

The spread of instant coffee is also a story of how advances in food processing technology updated Japanese lifestyles.

• A Japanese scientist's contribution: The method for making instant coffee was first invented by Japanese scientist Satori Kato in 1899. His invention, presented at the Chicago World's Fair, became the scientific starting point for today's "quick brew" culture.
• From spray-drying to freeze-drying: The original manufacturing method used high-temperature "spray drying," but later, "freeze-drying" — freezing and vacuum-drying at around -40°C — was developed. This method reduced flavor loss from heat and helped seal in that just-brewed aroma.

Caffeine and Brain Performance

The compounds in coffee genuinely support concentration and clear thinking.

• Blocking adenosine receptors: Caffeine binds to the receptors for adenosine, a substance that causes drowsiness, getting there before adenosine can. This helps keep the brain alert and can improve work efficiency and attention.
• The antioxidant power of polyphenols: Coffee contains chlorogenic acid (a polyphenol) in amounts comparable to red wine. This compound helps reduce oxidative stress in the body and supports vascular health — drawing attention for its anti-aging potential as well.

[Image showing the Freeze-Drying process: Coffee extract frozen into granules, then vacuum sublimated to preserve aroma]

Fun Facts About Instant Coffee

• Even NASA approves: "coffee in space": The coffee astronauts drink in space is also based on freeze-drying technology. Its consistent quality, even in extreme environments, is a testament to the reliability of this process.
• The ideal water temperature is 90°C: Brewing with water around 90°C — rather than freshly boiled water — brings out coffee's aroma best and results in a well-balanced flavor with softened bitterness.
• A mindful minute: The moment you pour hot water and the aroma spreads — just smelling coffee has been shown in medical studies to increase alpha brain waves, producing a relaxing effect.
• A logical "secret ingredient": In curries and demi-glace sauces, a small amount of instant coffee can enhance the perception of "roasted" depth, deepening the overall flavor of the dish.
• The science of shelf life and storage: With its extremely low moisture content, instant coffee keeps well, but it's sensitive to humidity. Storing it sealed in a cool, dark place is the scientific rule for preventing oxidation and preserving flavor.

Tips for Enjoying Instant Coffee Day

• To mark August 11, brew your favorite cup. Since the brain begins to feel the effects of caffeine about 20 minutes after consumption, having a cup during a work break can help maximize your afternoon performance.
• Try iced instant coffee. Dissolve the coffee in a small amount of hot water before adding ice — this quick-cooling process locks in the aroma and helps refresh you from summer fatigue.
• Take time to enjoy the aroma. Spend 30 seconds really savoring the scent that rises as you pour hot water. This alone can help calm the brain's amygdala and ease stress.
• Try different variations — with milk, cinnamon, soy milk, and more. Combining different ingredients is a fun way to refine your palate while balancing nutrition.

A Rising Aroma Clears the Fog from Your Mind, and a Moment of "Intellectual Space" Sparks Real Creativity for Tomorrow

August 11 is a day to give thanks for the evolution of instant coffee, which offers a few minutes to "reset yourself" anytime. The cup that arrived in homes in 1960 still gives us a moment of rest and energy in our busy daily lives. After months of being constantly busy, does your mind feel a little parched? Today, gently spoon some coffee into your favorite cup and let the sound and aroma of the pouring water wrap around you. As your mind awakens and settles, your perspective can become clearer — giving you the energy to move through the new season lightly and in your own way. Enjoy a wonderful summer with a fragrant cup of coffee.