The effect of the grinding method of coffee powder on the flavor of coffee when brewing coffee

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How the fineness of coffee powder affects the taste-Common grind fineness chart

When making coffee, what is the ratio of water to coffee powder?

Uncle Coffee: Hand-brewed coffee has become more and more popular over the years, and some people still don't know much about the ratio of coffee powder to water when brewing, or they are still groping for adjustments. In fact, the best ratio of powder to water is 1:10, that is, 10 grams of coffee powder, it is recommended to use 100cc of water, the coffee extracted from the most just taste. However, some people will use a method to make the taste of coffee more layered, for example, today use 30 grams of coffee powder, but only 280cc of water to brew, and finally pour 20cc of boiled water, because the water after coffee powder is only 280cc, so according to reason, this cup of coffee taste will be more rich, but in addition to pour 20cc of boiled water blending, can open the original rich taste, so that the taste is more layered. As for the proportion of powder and water in Italian espresso coffee, it is different from hand-brewed coffee. We often hear Espresso, in fact, it will be accompanied by three terms Single, Double and Ristretto. These are all representative of different proportion concentrations of coffee. The common Single is about 9 grams of coffee powder will rush out 30cc coffee;Double is 18 grams of coffee powder to rush out 60cc coffee. As for Ristretto, it is about 14- 16 grams to rush out 30cc coffee. The taste and phase will be thicker than Single.

Coffee bean grinding

The grinding method of coffee powder must match the brewing method of coffee in order to extract the best flavor from coffee beans.

Usually, coffee powder and hot water contact time longer brewing method, need a bit coarser particles.

If the coffee powder is too fine relative to the brewing method, the coffee will have a taste of "too bitter, hard, overcooked"; of course, if the coffee powder is too coarse, it will make the finished product tasteless.

In addition, the contact area between the powder and the air is large, and the ground coffee powder is easier to oxidize and degrade.

As coffee tastes improve, more and more people tend to grind coffee beans at home and brew them fresh. Nowadays, many electric coffee pots are highly automated, and some even include the function of grinding coffee beans.

There are three ways to grind coffee beans: grinding, grinding and mortar grinding.

1. Grinding:

This method uses two rotating parts to squeeze and crush coffee beans. The ground method produces coffee powder that is more uniform and has a more consistent flavor when cooked.

The abrasive member may be disc shaped or conical.

(1) The conical disc design reduces the required rotational speed, generally below 500 rpm.

The slower the grinding speed, the less heat generated by friction, so the aroma of coffee is not lost easily. By adjusting the grinding parameters, the cone grinder can be used for a variety of coffee preparations. A better machine can grind the fine powder needed for Turkish coffee.

And cone machinery noise is less, the probability of blocking is also smaller.

(2) Disc grinding discs generally rotate at a higher speed and generate more heat; however, they are widely used, economical and practical, and can be used for the preparation of most household coffee.

2. Polishing:

Most modern machines actually grind coffee beans at speeds of 20,000 to 30,000 rpm (some people simply use a beater).

These blade grinders have a longer life expectancy; however, the heat accumulated during grinding and the size of the coffee powder produced are uneven, making it difficult to extract high-quality drinks.

This type of sander can theoretically only be used for drip coffee pots. They produce dust that clogs filters in espresso and French press machines.

3. Mortar mill:

If you can't find good grinding equipment, then all you can do is use a pestle and a mortar, and enjoy the fun of labor slowly.

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