The hand-ground coffee that Su Daqiang wants to drink is ground with care.

The family life drama "All Is Well" that ended a few days ago not only contributed to many topics, but also the characters in the drama were made into emoticons by netizens. One of them showed the scene where "Su Daqiang, the first work of the Su family", lay on the ground and said "I want to drink hand-ground coffee". How to make hand-ground coffee? Does it really taste better?

Screenshots of TV series

Su Daqiang emoticon package designed by netizen "Mario Xiaohuang"

Grinding method affects coffee quality

Coffee is a very particular drink. Coffee beans go through many processes from planting, harvesting, cleaning, transportation to roasting. How to grind and brew is the key to making a good cup of coffee, and grinding is the most important part.

The ideal time to grind coffee is before cooking, because ground coffee easily oxidizes and loses its aroma. If it is not properly stored, the coffee powder will easily change its taste.

Grinding is divided into fine grinding (fine particles, the size of granulated sugar), medium grinding (particles are the size of granulated sugar and raw sugar mixed), and coarse grinding (coarse particles, the size of raw sugar). When grinding, the coarseness of the powder depends on the cooking method. The shorter the cooking time, the finer the powder should be, and vice versa. Correct grinding can make the coffee beans emit the greatest flavor and aroma, laying a good foundation for brewing a cup of delicious and fresh coffee.

Grinding tools have their own characteristics

Grinding coffee requires tools or machines. Before the invention of the grinder, people used stone pestles and mortars to grind coffee. This requires skill and patience, but it also allows you to experience the joy of doing it yourself. The biggest advantage of this method is that it allows the coffee to be ground to an extremely fine degree. It is said that the coffee ground in this way can give off the most mellow flavor.

Blade grinders are widely used now. This machine uses a set of rotating blades to chop coffee beans into small pieces. But it also has certain defects. It cannot guarantee that the ground particles are of the same size. When brewing coffee, the size of coffee beans is very important. Otherwise, small pieces of coffee beans will be over-extracted, causing the coffee to become sour; large pieces of coffee beans cannot be fully extracted, resulting in bland coffee. In addition, the grinder generates heat during the grinding process, which also affects the flavor of the coffee.

Conical burr grinder, which does not use a blade, but instead uses a stationary and a movable burr, both of which are conical, and uses gravity to pull the coffee beans into the coffee grinder, where the coffee beans are crushed in the gap.

This tool has great advantages: 1. Each coffee bean can be ground into a uniform size; 2. The burrs do not generate as much heat as the blades.

The flat wheel burr grinder uses two flat wheel burrs for grinding. The advantage is that the grind is extremely uniform, but the shape of the flat wheel makes the coffee beans more likely to get stuck, so the machine needs to be cleaned more thoroughly.

The roller grinder grinds the coffee beans between spiral-patterned rollers. Due to its high price and large size, it is mostly used by commercial or industrial coffee manufacturers.

Good coffee beans are indispensable

Even the best cook cannot cook without rice. No matter how good the grinder is, it is impossible to make perfect coffee without high-quality coffee beans as raw materials. After understanding the grinder, let's take a look at several high-quality coffee beans.

Blue Mountain Coffee is well-known among the general public. It is produced in the Blue Mountain region of Jamaica in Central America. It has a mellow and smooth flavor, with a complex sweetness and sourness in the bitterness.

Mandeling Coffee is produced in Sumatra, Indonesia. It has a mellow and rich taste with a caramel-like aroma.

Mocha Coffee is produced in Ethiopia. It has a slightly sweet taste with a soft sour flavor and an elegant flavor.

Kopi Luwak Coffee is produced in Indonesia. After being eaten by civet cats, coffee beans cannot be completely digested by their digestive system, so they ferment in their stomachs and intestines and are excreted through feces. Locals take the coffee beans from them and process them, which becomes "kopi luwak" coffee.

Coffee drinking tips

Although coffee is good, it should be consumed in moderation according to one's own situation. Different types of people have different daily drinking amounts. The "Scientific Consensus on Coffee and Health" jointly issued by the Institute of Nutrition and Health of the Chinese Center for Disease Control and Prevention, the Health Communication Branch of the Chinese Preventive Medicine Association and other institutions gave the following suggestions:

1. Healthy adults

No more than 210-400 mg of caffeine can be consumed per day (approximately equivalent to 3-5 cups of coffee).

2. Pregnant women

Although pregnant women can drink small amounts of coffee during pregnancy (no more than 150-300 mg of caffeine per day, about 2 cups), it is not encouraged for pregnant women.

3. Children and adolescents

It is safe for children and adolescents to consume no more than 2.5-3 mg of caffeine per kilogram of body weight per day. It is not recommended for children and adolescents to drink coffee.

If you are also interested in coffee, why not follow Su Daqiang's footsteps and try your hand-ground coffee! You can experience the different aroma from finished coffee and the fun and mood of grinding, which will be a unique experience.

Beijing News reporter Li Yan, intern Long Jiaqi, photo source: Visual China, video screenshot, editor Li Yan, proofreader Liu Baoqing