Coffee bean oil is not good enough to make coffee.

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Oil is an iconic brown foam of Italian concentration, floating on espresso that has just been extracted. Although fat is a major feature of a good espresso, it has more or less other effects on Italian concentration.

However, there is still a lot of controversy about grease. Some people say that oil is the hallmark of perfect espresso, others say it is an overvalued trait, if you extract it, it must be a good thing, but if it is not extracted, oil is not essential. So, let's first find out why baristas care so much about fat.

● first of all, what is grease?

Grease is a reddish-brown foam with flavor and aroma that floats on top of an espresso. It is formed by the combination of bubbles and the oil dissolved in coffee powder. Some people call this the "Guinness dark beer effect" because it vividly recreates the foam of the very popular Guinness dark beer.

The existence of a large amount of oil in espresso also shows the quality of coffee beans, coffee powder with suitable grinding degree, skilled baristas and, of course, professional equipment. oil can give espresso a fuller flavor and a longer finish than filtered coffee.

●, what is the perfect grease?

Different baristas have different views on the perfect fat. The approximate standard is that it is neither too thick nor too thin and can float the oil on the surface of espresso for about two minutes. This answer may sound complicated, but the following points may help you sort things out.

First of all, if you have too much oil in your cup, there will be less liquid in your cup of espresso, but many baristas want an espresso that accounts for about 1/10 of the brown liquid of the whole cup.

Secondly, excessive extraction and insufficient extraction as well as the degree of grinding will affect the oil. If the oil from your espresso disappears in less than a minute, you are extracting too fast, or the coffee beans are too shallow to roast. If there are too many African beans in the coffee beans, the oil will disappear quickly, and there is a possibility of caking.

In addition, a good espresso machine, the extraction time of coffee should be between 20 to 40 seconds, can fully extract the soluble substances and aromatic substances from coffee, but this also varies from machine to machine. But remember to preheat your machine before extraction and clean the machine regularly to make sure it continues to work properly. Dirty machines can also bring bad taste to espresso.

Factors affecting Oil and Fat by ●

You can't have 100% complete control over your concentrated grease. Because in addition to the extraction technology, the oil will also be affected by the following factors.

How fresh are your beans?

Fresh baked beans are more likely to extract thick fat. This is because the fat in coffee beans is converted during baking, and roasting makes coffee beans produce a lot of gas. Therefore, in the process of extraction, the fat in coffee beans and a large amount of carbon dioxide are released, which will produce more abundant oil. So, every time you go to a self-baking cafe, you can always see that their grease is thicker.

●, how deep are your beans baked?

In general, deep-roasted coffee beans are more oily, because when roasted, coffee beans undergo longer caramelization and Maillard reactions in the boiler, more fat conversion and sugar dioxide, so that coffee beans produce more oil during extraction. But the freshly baked beans may have the phenomenon that the oil is not delicate and hard enough, and it takes a period of time to extract the more delicate oil. However, if the deeply roasted coffee beans are placed for a long time, for example, for a month or so, the flavor of the coffee beans will be significantly reduced, and there will be less oil during the extraction.

What is the treatment of ● greasy coffee beans?

Sun-processed beans usually produce better fat because more of the fat-converting substances in raw beans can be retained.

●, what kind of equipment are you using?

Many household espresso machines have automatic controls. Although this is convenient, compared with others, this process also limits the formation of grease. There are automatic coffee machines that are designed to try to make up for this by creating a foam layer that mimics the oil-forming process.

In addition, if the equipment used to make drip coffee is used, the oil in the coffee will be filtered out by coffee powder and filter paper / mesh, with a slight gloss at most.

Therefore, if you want to extract rich oil, you must first consider the use of extraction equipment.

Is ● fat really that important?

Although a good fat is a major feature of a perfect espresso, it is not as critical as you might think. It does add to the flavor of espresso and is very popular. However, a cup of espresso without perfect fat can also make you feel delicious.

The key to espresso is the taste. Whether you like it or not is the most important thing. If you don't have the ideal fat in your coffee, don't be depressed and don't think that your coffee has failed. Remember, coffee beans, roasting degree and equipment all play a vital role, and each step will affect the extraction of oil.

Brand recommendation of coffee beans with lots of ● oil

Located in Dongshankou, Yuexiu District, Guangzhou, Qianjie Coffee freshly roasted Italian blended coffee beans are fully guaranteed in brand and quality, and the amount of fat is good, so it is suitable for making fancy coffee and lace coffee. 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