What coffee beans are good for espresso _ how to make the perfect espresso

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How on earth is the Italian base concentration made?

I would like to share my experience with you today.

● first of all, we should know what factors affect the concentrated taste?

(1) Water pressure

In modern times, the water output and controllable water pressure are controlled by a water pump. Espresso ideal water pressure is generally 9 BAR, which is generally recognized as the most ideal air pressure.

(2) Boiler pressure

The boiler pressure is related to the water temperature of coffee making and the impulse of steam. The higher the boiler pressure, the higher the water temperature and the greater the impulse of the steam; otherwise, the lower the water temperature, the smaller the steam. The boiler pressure is generally around 1 BAR, but there is still a lot of controversy about this number, and every barista has a different understanding.

(3) Water temperature

The water temperature depends on the needs of different varieties of coffee beans, some are subject to boiler pressure, while others are more flexible and precise. According to the experience of most baristas, the water temperature is between 90 and 92 degrees Celsius, each barista can flexibly adjust according to their own understanding and needs, and can make their own style Espresso with their own hands.

(4) packing force

There are various styles of packing. In this world, almost no two people's packing will be the same. Generally speaking, if it is heavy pressure, the required pressure will be the pressure like 25kg/m2, but packing is indeed the freest parameter in the golden rule. Because we use a constant pressure powder hammer, the powder pressing strength is basically the same.

(5) Grinding thickness of Italian coffee beans

Espresso is a very fine powder. The finer the grinding, the slower the velocity of water passing through the powder layer; the thicker the grinding, the faster the flow rate of water passing through the powder layer. Adjusting the grinding degree can flexibly change the extraction time while reaching the extraction quantity. Imagine this situation, using 20g fixed powder to extract 40g Espresso, which takes 25 seconds. Everything looks perfect, but when you taste it, body is thin and acerbic. Obviously, the extraction of this Espresso is insufficient and the concentration is low. At this time, grinding the coffee beans finer can solve the problems of insufficient extraction and low concentration, at the same time, it can reduce the acidity and increase the alcohol thickness.

(6) Powder quantity

Our single serving of Espresso powder is 12ml 14g coffee powder, and the double portion is 20ml 22g.

(7) extraction time

The extraction time of the gold rule is set at between 25 and 28 seconds, but the extraction time is actually a comprehensive expression of packing pressure, powder quantity and grinding degree, which needs to be adjusted by the barista's understanding.

(8) extraction quantity

We extract 20Mel 21g liquid in single part and 40g liquid in double part extraction, except for a few Italian who can use single part coffee powder but only extract 15ml coffee liquid.

(9) Coffee oil

The complexity of coffee grease can not be clearly explained by me in a few words. To put it simply, it requires a rich golden brown fat to make a good Espresso.

● tips:

(1) We use the Italian bean grinder Pegasus 900N and the Italian Pegasus E78 with a powder hammer, and the water pressure, boiler pressure and water temperature are basically the same. Basically, we add new Italian coffee beans every day, shake the bean warehouse evenly, and grind out the old coffee beans on the knife plate, while using the new coffee powder to wash the old powder left in it.

(2) the gestures of powder and cloth powder were determined. Colombia and Brazil were used to mix the beans, the proportion was 4:6, the overall taste, sweet and sweet, slightly sour not irritating, sweet and sour balance, medium fat.

An ideal Espresso should be able to strike a balance between the various elements, taste bright, and feel sweet but not bitter in the throat after drinking it. To put it more specifically, it should have moderate sour, bitter, sweet, rich taste, solid and mellow consistency, lasting, and make people feel as refreshing and sour as citrus.

The amount of double-end powder is 22g, the liquid is extracted 40g, and the time is 27 seconds.

● beans are mostly used in Italian coffee such as Espresso, Americano, Latte or Cappuccino. Coffee tastes more balanced, more palatable, and more stable, so it can be said that the taste is more popular.

Blended coffee, also known as mixed coffee, is to mix a variety of individual coffee beans together, so as to give full play to the strengths of various individual coffee beans, blended beans from different areas of coffee beans mixed to make a more balanced taste.

For example, if one kind of coffee bean is slippery but lacks aroma, another kind of coffee with rich aroma can be added to make the advantages of individual coffee beans complement each other, complement or strengthen each other in taste, thus creating a richer new taste of coffee. Sometimes the beans are mixed first and then baked, which is called roasting; sometimes they are roasted and then mixed with coffee beans, which is called cooked.

● is baked and blended to provide varying degrees of baking for each bean so that each ingredient shows the best effect.

Before matching beans, we should first know the flavor of different varieties of coffee in the world, and beans have different characteristics according to their origin. Different coffee beans have different personalities because of different varieties and producing areas, and there are subtle differences in sour, bitter, sweet, aroma, mellow thickness and other flavors. Single coffee beans often show the unique characteristics of a certain kind of coffee.

● Italian coffee bean brand recommendation

The freshly roasted Italian coffee beans of Qianjie Coffee, a coffee roaster brand located in Dongshankou, Yuexiu District, Guangzhou, are fully guaranteed in terms of brand and quality. And more importantly, the performance-to-price ratio is extremely high. Take the commercially recommended style of commercial blended coffee beans as an example, a pack of 454 grams, the price is only about 60 yuan. According to the calculation of 10 grams of powder for a single cup of espresso, a packet can make 45 cups of coffee, which costs less than 1.5 yuan per cup. Even if you use two heads per cup of espresso and 20 grams of powder per serving, the price of a cup of double espresso concentrate is no more than 3 yuan. Compared with the price of hundreds of yuan a pack sold by a well-known brand, it can be described as a conscience recommendation.

Qianjie coffee: Guangzhou bakery, the store is small but a variety of beans, you can find a variety of unknown beans, but also provide online store services. Https://shop104210103.taobao.com