Relationship between water temperature of hand-brewed coffee and extraction tools and freshness of coffee beans

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Relationship between water temperature and extraction tools

The temperature of the brewing coffee determines the aroma of a cup of coffee, so the quality of the water is as important as the quality of the coffee beans. When brewing coffee, the hot water temperature also varies depending on the extraction tool used.

Using the filter paper dripping method to brew coffee to make a simple explanation, the water temperature can best achieve the taste balance of coffee between 82 degrees C and 83 degrees C. beyond this temperature, some tastes will be particularly obvious, and some delicious ingredients of coffee can not be boiled below this temperature. Too high water temperature will make the coffee sour and astringent:

Water temperature

Suitable baking degree

The change in the taste of coffee

Above 88 degrees C

X

If the water temperature is too high, it is easy to produce bubbles and cause partial steaming.

84 degrees C, 87 degrees C.

Deep baking, medium baking

The water temperature is slightly higher, the taste is stronger and the bitterness is more obvious after cooking.

82 degrees C, 83 degrees C.

All baking degrees

For the filter paper dripping method, 82 degrees Celsius 83 degrees C is the right temperature, showing a relatively average taste.

77 degrees C, 81 degrees C.

Deep baking

The water temperature is slightly lower, which suppresses the bitter taste, but the taste is uneven.

Below 76 degrees C

X

The water temperature is too low to brew the aroma of coffee, and steaming is not complete.

Relationship between water temperature and freshness of coffee beans

Take the filter paper dripping method as an example, freshly baked beans are still emitting a large amount of carbon dioxide. If you inject hot water above 90 degrees C, it will not produce general steaming, but will spray foam, making the taste of coffee worse. If freshly baked beans are boiled with filter paper dripping method, it is better to slowly extract them at a temperature below 80 degrees C.

Beans that have been roasted for more than two weeks have lost a lot of freshness, and must be extracted at high temperature. the water-locking ability of rancidity coffee beans on filter paper is getting worse, so it needs a higher water temperature to release its aroma and flavor.

The repair of taste

The water temperature alone will change due to the extraction tools, the freshness of coffee beans and the degree of roasting of coffee beans. In order to drink a good cup of coffee at any time, it is really a very important task to repair the taste.