Is "leaving it in" the right answer? Exploring the science behind coffee bags

"Leaving a teabag in too long makes the tea bitter."
This is a sort of "etiquette" we learn when brewing tea.

However, this common knowledge does not apply to coffee bags (dip style). In fact, "carrying it around in a tumbler with the bag still inside" is the most logical way to brew it.

This time, we will explore the reason why coffee bags do not become bitter over time, from the perspective of physics.

1. The laws of physics apply "automatic brakes"

The mechanism by which coffee dissolves is known in physics as "Fick's Law of Diffusion."

While it may look complicated, the concept is simple.
"Components move from a concentrated area to a less concentrated area and stop when the concentrations are equal," this is a rule of nature.

When a coffee bag is steeped, the delicious components dissolve into the hot water, and eventually, the concentration inside the bean and in the water becomes equal. Then, according to the laws of physics, the movement of components stops precisely.

This is called "equilibrium."
In other words, the coffee itself "automatically applies the brakes," saying, 'The concentration is now sufficiently delicious, so I will stop extracting any further.'

2. Why does tea become bitter, but coffee doesn't?

This raises a question: "Then why does tea become bitter?"
The reason lies in the difference in the "structure" of the ingredients.

• Tea is a "leaf":
  Its tissue is soft, and when it comes into contact with hot water, the cell doors open completely. A vast amount of hidden bitter components are released all at once, so the "brakes" cannot keep up.
• Coffee is a "seed":
  It is a "tree seed" protected by very hard cell walls. The pathways for components are narrow, so extraction is gentle. Once the delicious components are fully extracted, it reaches an "equilibrium state," and the structure is designed to "close the shutter" before bitterness emerges.

3. Just one rule for delicious coffee

To benefit from this principle of physics, there is just one tip I'd like you to follow.
It is "do not shake it."

Shaking vigorously or squeezing the bag will break this "natural brake" and forcibly extract unpleasant flavors.

Just by doing this, the laws of physics will automatically create the best cup of coffee for you.

Your "best companion" for busy days.

When you're focused on work and suddenly realize, it's the perfect time to drink.
The clear sweetness lasts even after time passes, thanks to the "power of science" inherent in coffee beans.

Enjoy a free and smart coffee life with BASE COFFEE's coffee bags.