Coffee Technology
Latest articles, industry insights and brewing guides
Is it true that coffee can not be extracted twice? What's the difference if the coffee is extracted twice?
Is it true that the coffee granules used can not be extracted twice? This is obviously a funny question, because it really can't be extracted twice.
Changes in coffee bean roasting: patented technology increases the content of polyphenols in roasted coffee beans
According to foreign reports: applied Food Science Company (Applied Food Science Inc.) A patent has been obtained that can greatly increase the content of polyphenols in roasted coffee beans. The technology includes two processing steps: the first step is to extract and dissolve the polyphenols from raw coffee beans by water extraction technology, and the second step is to combine the extracted polyphenols.
Knowledge points of coffee cultivation: factors affecting coffee tree growth and coffee bean quality leaf rust
Image: the shift of google from traditional shading to sun exposure may be the main cause of large outbreaks of coffee leaf rust on coffee farms in Central America and Mexico. Coffee leaf rust was discovered in Central America as early as 40 years ago, but recent outbreaks in Central America (Colombia, Costa Rica, El Salvador, Guatemala, Nicaragua) and Mexico are by far the most
Compare the acidity (sour taste) of coffee. Let's learn about the flavor characteristics of coffee beans.
1. Arabica has high acidity, while Robusta has low acidity. The acidity of washed beans is high while that of sun-dried beans is low. The acidity of light baking is high and that of deep baking is low. High acidity does not mean bright and low does not mean dull; 5. The sour taste of fast baking is relatively bright, but improper grasp will lead to acidity; slow baking sour taste is relatively soft, but improper grasp will lead to dull; 6. Made with high water temperature and relatively bright sour taste
On the causes and Solutions of extraction factors of Coffee beans after roasting
I was going to go directly into the implementation mode, but think about it or pull this article to the front first, so that you may have a general understanding of different brewing methods, and it will be easier to clarify the relationship and cause of formation of different flavors. ~ the extraction of coffee is nothing more than two things: the solubility, the longer the diffusion, the more dissolved molecules, the more complete the diffusion, of course, everyone.
Brief introduction of 90 ninety plus to gain an in-depth understanding of the cultural development and knowledge of 90 + coffee beans
Recently, when I talked to a lot of people about 90 beans, I found that many people still don't know the naming, classification and grade of 90. In retrospect, when I first came into contact with 90, it took me some time to get a general idea of what the name of 90 was all about. I have to say that from concept to brand management, this is a very special company, but at the same time for the average consumer
Fully master the skills of hand brewing coffee to understand the principle of drip hand brewing of segmented extraction test
The first test: no photos, draw a picture to show the cup test results: the first two cups set sweet, fruity sour, fermented aroma; the last two cups floral and citrus aroma
Simple understanding of coffee bean roasting and attention should be paid to the preservation conditions so as not to lose the flavor of coffee beans.
The roasting of coffee beans is the process of converting coffee from raw beans to ripe beans, which is generally divided into eight stages: very shallow roasting (LIGHT Roast), shallow roasting (CINNAMON Roast), micro roasting (MEDIUM Roast), medium roasting (HIGH Roast), medium and deep roasting (CITY Roast), deep roasting (FULL-CITY Roast), very deep roasting (FRENCH Roast), and very deep roasting (ITALIAN).
To make espresso, you should use mixed beans about Italian concentrated (espresso) blending and flavor.
Commercial coffee trees planted are mainly divided into three categories: Arabica (Arabica), Robusta (Robusta) and Liberika (Liberica). Among them, Liberika (Liberica) is rarely seen because of its small output. It is generally believed that Arabica (Arabica) coffee beans grown at high altitude have elegant aroma and taste, while those grown at low altitude (Robusta)
Coffee brewing method powder quantity control (supplement) and the standard of pressing powder to make Italian coffee
Mentioned scraper, it allows you to control the amount of powder, but the disadvantage is that it will waste the amount of powder. Mentioned scraper, it allows you to control the amount of powder, but the disadvantage is that it will waste the amount of powder. In fact, it also has a limitation, if a filter bowl can hold 18g powder, the scraper can only control the amount of powder by scraping off the powder. So the upper limit of the powder bowl of 18g is only 18g. Of course, some coffee
Teach you how to make coffee by hand and master the easiest way for beginners to make coffee.
Hand-made coffee is no stranger to many friends. It is different from the legal pressure and Philharmonic pressure we mentioned earlier in that coffee is no longer made through the principle of soaking, but through filter cups and filter paper, and water is produced through coffee powder. However, whether it is soaked or powdered with water, it is still extracted, that is, when the water comes into contact with the coffee powder, the coffee dissolves into
Some things about Coffee extraction Summary of incomplete extraction of roasted coffee beans
The first coffee will not melt completely when thrown into the water. The maximum extraction rate of roasted coffee beans is 30% (substances that can be dissolved in water divided by the total weight of coffee). This seems to be nonsense: 1. Whether it's French pressure, Philharmonic pressure, all kinds of pressure, or espresso. The range of the best extraction rate is 18% Mui 21%. Insufficient extraction (less than 18%) indicates that the flavor of coffee is not fully soluble.
Some things about coffee bean grinder Common questions and parts answers of Italian Coffee Grinder
The importance of the grinder first of all, I feel it necessary to explain the importance of the grinder. In a sense, the grinder plays a more important role in the espresso machine than the coffee machine itself has always liked to say: what exactly is the coffee machine for? As mentioned earlier, the three main functions are extracting coffee, milking, and heating water. But today, due to talking about research,
How much water does it take to brew the Philharmonic coffee? What should be the thickness of the powder?
The Philharmonic came into my sight in such a high profile. Later, last year, when I began to try Philharmonic pressure, I found that Philharmonic pressure does have its charm. Because it is easy to make, it tastes clean, and it can be adjusted according to our taste. Today, I will first use the picture to introduce how to make it. Then I briefly describe the principle of Philharmonic pressure again, and
The brewing method of high-quality coffee: answers to ten common questions in the Philharmonic brewing method.
First, is it better to use Philharmonic filter paper or metal filter mesh? You may not like coffee made from filter paper as much as coffee made from metal filter. The metal mesh allows a lot of sediment and gum to enter the coffee, making the coffee taste heavy and rough, similar to coffee made by pressing pots. We organized a number of coffee lovers to test that most people like the coffee made by filter paper. About Philharmonic pressure filtration
Coffee etiquette? How to drink coffee? How should I drink the coffee? How to drink coffee better?
The correct posture for holding a coffee cup: in a western restaurant, you often drink coffee after a meal, which is half the amount of ordinary coffee. And the cup that holds the coffee, the ear of the cup is very small, the finger cannot pass through. The correct way to hold it is to pick up the cup with your index finger and thumb. When serving coffee, the waiter must point the ear of the cup to the left of the customer so that the customer can hold the ear with sugar and milk. When you operate, you don't.
Brewing method of single boutique coffee: introduction to the brewing method of follicular coffee and the use of utensils
The principle of water injection is the same from beginning to end, try to control the water flow fine and uniform, not intermittent; to gently inject hot water, do not let the water wash the coffee powder into a mess. Fold the joint edges of the filter paper on both sides, unfold and place them in the filter cup, pour the ground coffee powder into it, and shake slightly to make the coffee surface smooth. Gently dig a groove in the center of the coffee powder from inside to outside, straight
Siphon pot mocha pot drip coffee what is the difference simple analysis of the three commonly used coffee brewing
The mocha pot consists of two parts. It uses high-temperature steam produced by boiling water to extract espresso. The extracted coffee is very strong and is suitable for people who like espresso and fancy coffee. Siphon pots and Royal Belgian pots are used to quickly brew coffee with hot water based on the siphon principle, which is suitable for making individual coffee. The beautiful process of making utensils is very ornamental. Drip type one
Daily maintenance and cleaning of coffee machine it is the duty of a good barista to maintain the coffee machine.
The daily maintenance of the coffee machine ensures that the coffee machine is placed in a dry and ventilated room; avoid frequent movement and avoid external force impact; keep the inside and outside of the machine clean; use a 220V special power outlet, it is best to have current protection facilities; it is best to turn off the power supply of the machine if it is not used for a long time. The cleaning method of the coffee machine the bucket in the machine should be cleaned regularly to ensure that there is no water pollution and scale in the bucket. Recommended monthly
Brewing method of individual coffee: 360 degrees without dead angle analysis of "French pressure pot" coffee making skills
Everyone will not make coffee at first, but will gradually learn to make coffee through experience or other tips to make it more and more delicious, but if you do not learn how to make coffee because of your personal laziness, then your coffee will never be complete. You only have an incomplete cup of coffee. When it is late, it will be too late. You can only watch how others enjoy themselves.