Coffee Technology
Latest articles, industry insights and brewing guides
Countries all over the world have their own preferred baking tendency.
Countries around the world have their own preferred baking tendency, coffee beans will cause subtle changes in taste and flavor due to the different degree of roasting.
There are three things to pay attention to when mixing coffee
1. To mix a flavor, you have to have an idea of what you want to taste, that is, you have to figure out what kind of coffee you want to drink. According to a certain standard to mix out the taste that has been formed in the brain, all the coffee beans used must have their own task; 3. When mixing coffee beans, be sure to be familiar with the taste and characteristics of all kinds of coffee beans.
Cupping is not everything.
Written in the front: beginners are not advised to refer to this article, friends who are not familiar with Cupping are not advised to refer to this article, it is best that you also know something about coffee roasting.
Master Coffee selection combination
In the process of participating in the WBC (World Bristol Competition) every year, we always hope to show more of the rich flavor and changes in the coffee cup to the judges. So in the creative coffee, often several different drinks will be presented at the same time, in order to give more interpretation to the coffee.
SCAA's coffee roasting
American Coffee Association (SCAA) roasting standard this standard uses infrared caramelization tester technology (Agtron) to measure the color of coffee beans to determine the roasting degree of coffee, and the color is divided into eight equal parts into eight standard color blocks for coffee industry as roasting identification.
Fine Coffee Roasting--Hawaiian Coffee
The Hawaiian Islands lie south of the Tropic of Cancer, straddling the 19th to 22nd parallel, and are blessed with coffee growing areas. Hawaii is the 50th state in the United States, 2,400 miles west of the continental United States, and the only state in the United States that produces coffee. Hawaiian coffee is internationally known as one of the best coffee in the world.
Analysis of Coffee roasting steps
Once the coffee seed is planted, no one can change its final quality. However, the color, aroma, bioactive components and health characteristics of coffee are related to the roasting process. During baking, coffee is heated at 190-220 °for 7-20 minutes, which helps to produce its aroma and good taste, and helps to form lactone, nicotinic acid, and
Basic chemical reactions that occur during coffee roasting
Many thermal and chemical reactions take place during baking: decarbonation, dehydration of quinic acid, fragmentation, isomerization, polymerization, and complex sugar reactions (caramelization). The main thermally reactive components are monosaccharides and sucrose, chlorogenic acid, displaced amino acids, and trigonelline amide. Both aravinone and calactose in polysaccharides are transferred, and basic sulfurization contains hydroxyamino acids.
Baristas treat baking as a challenge
The entrance of coffee has five flavors: fragrant, sour, bitter, sweet and mellow. In the magical world of bakers, coffee is life.
Coffee roasting-tools
Coffee is popular mainly because of the aroma formed after roasting and the taste when drinking. The coffee raw bean itself does not have any special taste, it is roasted to completely change and reorganize the substances inside the raw bean to form a new structure, thus bringing out the mellow flavor of the coffee.
Baking degree and characteristics
From the perspective of roasting degree, the deeper the roasting degree, the stronger the bitterness; the lighter the roasting degree, the stronger the sourness. The degree of roasting depends on the characteristics of the coffee beans themselves. For coffee beans with strong bitterness and light acidity, moderate and light roasting degree is generally selected.
The relationship between blending and roasting of coffee and raw beans
Do you want to bake and then mix, or do you want to mix and bake first? Which way is better?
Mixed beans-- the mixing of coffee beans
People need to put coffee from different places together for several different purposes.
Factors to be considered when buying raw coffee beans
The raw bean seller is mainly responsible for grading the coffee beans before selling them to the coffee bean merchant. After the grading is completed, premium coffee beans and boutique coffee beans will be selected, although they will have some defects but do not affect the coffee rating. These defects are not so serious, but they can also cause potential damage to the quality of coffee. Although Cupping is undoubtedly the most definite way to check coffee beans.
Coffee knowledge: ten kinds of defective beans in coffee
One of the most important factors affecting the quality of coffee is defective beans. The number of defective beans also affects the grade of coffee. For example, the coffee evaluation method used in Brazil is the "deduction method", which is graded according to the number of defective beans in 300 grams of staple beans per gram.
Coffee roasting repeats itself between operation, observation, discarding and recording.
When the coffee was roasted in the morning, there was a sudden power outage, and a furnace in Colombia was scrapped. When there was a sudden power outage, turn off the main power supply and shake the coffee out of the oven with a handle, so the handle of the roaster should be tightly tied to the roaster. Otherwise, there will be a big fire in the furnace.
Grading standard of raw coffee beans
There are two ways to classify brown raw beans, one is to filter the number, and the other is to divide it by elevation. It is divided by the number of the filter screen, and the size is in the unit of the screen (size). Round beans are generally smaller than flat beans, between 8-13 and 12-29. 8, 9, 10. 12, 13. 18. 29 = small, medium, ordinary. Quasi-big. Big, extra large. The bigger the size, the bigger the beans. Like SC-1.
Coffee Roasting Hot Air Roaster
Coffee roasting refers to the heating of raw beans to convert starch in raw beans into sugar and acidic substances at high temperature. Cellulose and other substances will be carbonized to varying degrees. Moisture and carbon dioxide will volatilize. Protein will be converted into enzymes and fats. The remaining substances will combine together to form an oil film layer on the surface of coffee beans. In the process, coffee acids will be generated.
Coffee roasting electric direct drum roaster
Coffee roasting (coffee roasting) means that through heating raw beans, starch in raw beans is converted into sugars and acids at high temperature, substances such as cellulose will be carbonized to varying degrees, water and carbon dioxide will be volatilized, proteins will be converted into enzymes and fats, and the remaining substances will be combined to form an oil film on the surface of coffee beans, and in the process coffee acids will be formed.
Coffee roaster household roaster
Coffee roasting (coffee roasting) means that through heating raw beans, starch in raw beans is converted into sugars and acids at high temperature, substances such as cellulose will be carbonized to varying degrees, water and carbon dioxide will be volatilized, proteins will be converted into enzymes and fats, and the remaining substances will be combined to form an oil film on the surface of coffee beans, and in the process coffee acids will be formed.