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Article: Can water make such a difference? The Impact of Water on Coffee, Tea, Rice, and Dashi – And How to Choose the Right Water

coffee

Can water make such a difference? The Impact of Water on Coffee, Tea, Rice, and Dashi – And How to Choose the Right Water


japanese woman cooking homemade meal and tasting food in kitchen

Can Water Really Make Such a Difference? The Answer Explained

"Does water affect the taste?"

👉 Answer: Yes, it does.

Coffee, green tea, rice, dashi.
These are all everyday items, but

👉 simply changing the "water" can significantly change the experience.


In particular,

👉 soft water tends to bring out the flavor of ingredients more easily.

This is often said.


woman surprised while cooking in kitchen looking at pot

Why does water change the taste?

The reason is simple.

👉 Most food and drink are composed of water.

That's why.


For example 👇

  • Coffee: Over 98% water
  • Dashi: Almost entirely water
  • Rice: Absorbs water during cooking
  • Tea: Extracted with water

👉In other words, water is the "very base of the flavor."


two women whispering and looking surprised conversation reaction

Two Factors Determining Water Differences

■ Hardness (mineral content)

  • Higher → Flavor tends to be stronger
  • Lower → Clearer, milder taste

■ Water properties

👉 Affects how ingredients dissolve (extraction)


👉This creates differences in taste.


Soft Water vs. Hard Water | How Does the Taste Change?

■ Hard Water vs. Soft Water

  • Hard water: Tends to bring out richness and bitterness
  • Soft water: Tends to bring out umami and sweetness

👉This is why soft water is said to be suitable for Japanese cuisine.


■ By Scene | How Water Changes Things

This is where it gets important 👇


pouring hot water over coffee grounds drip extraction closeup

Coffee × Water

👉 Changes clarity and aroma

  • Soft water: Clean and well-balanced
  • Hard water: Tends to bring out bitterness and heaviness

👉→ For details, click here (to the coffee article)


woman enjoying a warm drink relaxing at home

Green Tea × Water

👉 Changes umami (theanine)

  • Soft water: Mellow, sweet
  • Hard water: Tends to bring out astringency

👉→ For details, click here (to the green tea article)


japanese couple eating rice and smiling at the table closeup

Rice × Water

👉 Changes texture and sweetness

  • Soft water: Fluffy, soft
  • Hard water: Slightly firm, dry

👉→ For details, click here (to the rice article)


japanese couple smiling and enjoying a meal conversation together

Dashi × Water

👉 Changes umami and clarity

  • Soft water: Brings out umami
  • Hard water: Tends to bring out杂味 (unpleasant flavors)

👉→ For details, click here (to the dashi article)


Why is ultra-soft water chosen?

Of particular note is

👉 ultra-soft water (water with very low hardness)

.

Characteristics 👇

  • Doesn't interfere with ingredient flavors
  • Draws out ingredients' natural properties
  • Smooth on the palate

👉It can be said to be suitable as "water that can be used for everything."

.


mother and child cooking with rice cooker in a bright kitchen

What happens when you actually try it?

Simply changing the water can lead to

👉 The following changes may be noticed:

  • The taste becomes mellow
  • The aroma is enhanced
  • Meal satisfaction increases

👉No special skills are required.


Using water like Onsensui 99

For example,

👉 Onsensui 99 (ultra-soft water with a hardness of 1.7)

is water that

  • Doesn't interfere with taste
  • Enhances ingredients
  • Easy for daily use

👉It is suitable as "water that can be used for everything."


japanese couple saying itadakimasu with hands together before eating

Summary | Changing water changes daily life

From now on,

👉 It's not just about "what to choose,"
👉 but "what to make it with."

becomes important.


Even with the same ingredients,

👉 The experience changes with water


👉Changing water means changing the quality of your daily life.

.


👉First, try changing your usual water.
You'll surely notice the difference.


## Related Articles | Read more by theme

First,
👉 Please understand the basics in "What is water hardness? The difference between soft and hard water."

After that, please also see the differences for each theme.

・👉 "Does coffee change with water? How to choose water for delicious brewing"
・👉 "Does green tea change with water? The difference in water that brings out the umami of theanine"
・👉 "Does rice change with water? The reason for fluffy cooked rice"
・👉 "Does dashi change with water? How to choose water that brings out umami"

Read more

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Does Water Hardness Affect Taste? Explaining the Differences Between Soft and Hard Water and Their Impact on Flavor

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