The concept of specialty coffee has been in China for more than 30 years and has developed rapidly in the past 10 years. At the same time, people also have questions about the concept of specialty coffee. Hand-brewed coffee is generally specialty coffee, but are American, Italian, etc. specialty coffee? In fact, in international coffee competitions, especially in Northern Europe, Italian style has always been an important part of evaluating coffee quality.
For example, when we test the brewing plan of Pour over(V60) coffee, we often use the segmented flow interception method to test its feasibility. What effect will this method have if it is used in the extraction of espresso?
Front Street Coffee will1The espresso extraction is divided into three cups: first, middle and last to test the flavor and appearance differences. Use the store-exclusive sunflower warm sun blended coffee, which is made by7Honduran sherry coffee beans with3Blended with Yirgacheffe sun-dried red cherry coffee beans (independent roasting line)，Its flavor shows chocolate, cream, vanilla, sherry aroma and caramel charm.
In order to test the accuracy, the parameters of extracting 40 grams of espresso liquid using 20 grams of coffee powder for 28 seconds were calibrated multiple times.
This interception adopts the method of equal volume interception, that is, the 40 grams of espresso liquid extracted in 28 seconds is evenly divided into 3 cups of 13 (+1) grams of espresso liquid.
Actual extraction data
Front section: 0-15 seconds: 13.2 grams
Midsection: 15-21 seconds: 13.7 grams
Later section:21-28Seconds:13.8grams
Appearance comparison:
[Front section] It is dark in color, rich in fat and dark brown, and shakes like a solidified yogurt texture;
[Middle section] The color is slightly lighter, the oil color is light brown, and it shakes like the texture of whole milk;
[Later section] The color is lighter, the oil is thinner, the color of the oil is close to light yellow, and the texture of the oil shakes like water.
Flavor comparison:
[Front section] The overall flavor is strong and the body is mellow, with the sourness of lemon. The sourness is slightly sharp and salty, with a bitter aftertaste. It smells of complex floral aroma, and the overall flavor is strong.
[Middle section] The overall flavor is relatively balanced. The body is medium, with flavors of dark chocolate, nuts, and cream, with a hint of caramel sweetness.
[Later section] The overall feeling is very thin, the body is weak, watery, with cocoa and fermented wine flavors, and the overall concentration is comfortable.
Through the above comparison, we know that the obvious high concentration in the previous section represents most of the flavor substances in espresso, but because the concentration is too high, we are not used to it. The concentration in the middle is slightly lower, and we can taste more flavors, such as nut butter caramel and other flavors. The overall taste of the latter part is terrible, but its concentration is suitable so that the originally few flavor substances can be felt.
It should be noted that the first, middle and last sections of this discussion are the result of debugging the grinding and extraction to make it stable. The three-stage cut-off type is also often used to test extraction and concentration solutions, such as staged extraction.3Cup, find out where the defective flavors are concentrated, and adjust the extraction plan.
You can now buy the above coffee beans online at the Taobao store “FrontStreet Coffee” (前街咖啡). FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou, China, and its Guangzhou retail shop sells coffee beans only. The shop carries dozens of coffee beans from different origins around the world, including carefully selected single-origin beans for V60 pour-over and espresso. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers.
The FrontStreet 2013 Yunnan coffee beans sold in the store come from the Typica variety grown at FrontStreet Coffee’s own plantation in Yunnan. The name comes from the year the brand and the plantation were founded. You can buy these beans from China’s Yunnan origin at the Guangzhou shop and at FrontStreet’s Taobao store.
FrontStreet coffee beans are freshly roasted within 5 days and deliver consistently excellent quality and great value. Orders placed before 17:00 are shipped the same day, and most areas within Guangdong Province receive them the next day.
FrontStreet Coffee Taobao store: https://qianjiecoffee.taobao.com
Or search for “前街咖啡” (FrontStreet Coffee) on Taobao
Important Notice: FrontStreet Coffee has moved to a new address: 315, Donghua East Road, Guangzhou (coffee beans only)
Tel: 020 38364473
