There are four main factors that affect the taste of coffee during extraction:
1. Amount of hot water
The more water you use, the weaker the coffee will be, and the less water you use, the stronger the coffee will be.
So what is the ideal ratio of beans to water?
This depends on your preference, but generally one cup spoon (10g) is enough for one coffee cup (120-150ml), and when I ran a cafe, I served coffee using 15g, 150ml, and 30ml of hot water.
However, if you want to brew more than two cups, be careful; if you simply increase the amount of beans and add the same amount of water, the coffee will end up being a little too strong.
Of course, this is just a guideline, so please adjust it to suit the type of coffee beans and your preferences, such as "This coffee has a strong acidity, so if I make it strong it might taste a bit harsh," or "This coffee is characterized by a crisp bitterness, so I'll make it a bit stronger to emphasize the bitterness."
I will upload an explanatory article on the recommended adjustment method at a later date.
2. Water temperature
The temperature of the water greatly affects how much of the coffee beans are extracted.
Simply put, the hotter the water, the more extractables you can get.
However, if you extract a lot of ingredients using overly hot water, you may end up extracting unpleasant flavors such as bitterness and astringency, so be careful not to do so.
3. Grind size of beans (size of powder)
The amount and efficiency of extracted ingredients will also change depending on the grind of the beans , i.e. the size of the coffee powder.
Simply put, the finer the powder particles, the more ingredients are extracted.
Many components can be extracted.
The grind size of the beans can be adjusted using a mill (note that some mills do not have this function).
Some grinders, like my favorite electric grinder, the Kalita Nice Cut G, allow you to easily adjust the grind size by turning a dial, while others, like manual grinders, allow you to change the grind size by adjusting the screw on the handle.
If you want to extract as concentrated a liquid as possible, use a fine grind, but if you want a lighter finish, grind it coarser and reduce the extraction level.
The grind is explained in this article .
4. Contact time between hot water and beans
The degree of extraction of coffee components also depends on how long the hot water and beans are in contact with each other.
I think of it as the same as Japanese dashi stock.
Taking bonito flakes as an example, the thinner the shavings, the quicker you can remove them from the hot water when making soup stock.
Let's get back to the topic.
When using a drip-type brewer such as paper or cloth, you can adjust the contact time between the hot water and the coffee beans.
The longer the contact time between the hot water and the beans, the more ingredients will be extracted, and the stronger the flavor will be.
Furthermore, the point here is
This means that the sour components are extracted early and the bitter components are extracted later .
In other words, if you extract quickly, the bitter components will not be extracted very much and the acidic components will be extracted more, resulting in a lighter taste overall, whereas if you extract over a longer period of time, the bitter components will also be extracted, resulting in a coffee with a stronger bitter taste.
However, just because you want a strong cup of coffee doesn't mean you should boil the coffee in hot water for an excessively long time.
The balance between the grind size of the beans and the contact time with hot water is important.
summary
How to brew delicious drip coffee
It is important to control factors 1 to 4 above appropriately and visualize the coffee flavor you are aiming for.
Each blend has its own distinctive characteristics: " FEELING GOOD " is characterized by its bitter and sweet taste, " SPARKLE " has a refreshing acidity, and " I CAN'T WAIT " has a unique richness and sweetness.
Why not try brewing your own delicious cup of coffee by taking advantage of its unique flavor and matching it with the image of your favorite coffee?
I want people to experience the joy of brewing coffee exactly as they imagined.