The word Espresso comes from the Italian word Express, which means "quick". This also shows that espresso is a product that can be produced quickly. To make espresso, you need to use a special espresso machine.
espressothe birth of
The initial production principle of the espresso machine is to boil water through two independent boilers to generate steam, and then use the steam pressure to pressurize the hot water (about 1.5bar) through the coffee powder layer to extract extremely concentrated coffee liquid. But the espresso produced in this way does not taste good.
Therefore, at the beginning of the 20th century, an Italian named Luigi Bezzerra bought the patent for the first version of the espresso machine, and added a device to stabilize the air pressure, and a new coffee powder bowl for filtering and making the coffee powder evenly thick.
In just a few tens of seconds, the hot water is pressurized and quickly passed through the extremely finely ground and evenly distributed coffee powder layer. The extraction taste is more balanced, the taste is more espresso, and it is dropped directly into the cup. This is also the most basic design for espresso today.
Although espresso coffee appeared in 1884 when the espresso machine was born, the coffee drinkers at that time were all male workers, and women could not enjoy coffee in coffee shops. Therefore, not all Italians had tasted espresso coffee at that time, and the taste was not liked by everyone.
modernThe birth and flavor characteristics of espresso coffee
With the progress of the times, more Italians have begun to taste espresso, and such strong coffee has gradually become Italy's national drink. More and more people drink it, and they are also pursuing more coffee taste and quality. Therefore, in 1946, a man named Gaggia further improved the piston pressure system - using spring pressure instead of manual pressing, allowing a layer of golden coffee crema - Crema - to float on the brewed coffee.
Crema appeared for the first time in the history of coffee, and it was quickly recognized and loved by Italian people. Later, the production of espresso also gradually required coffee crease. FrontStreet Coffee believes that a good cup of espresso is strong but not bitter, mellow and solid, has a clear sweet aftertaste, has obvious layers, and has a smooth and delicate taste brought by the golden oil-flavored coffee.
How to make golden, buttery espresso?
The oil on espresso is actually the carbon dioxide in the coffee particles. Since it cannot return to the atmosphere in a sealed and pressurized environment, it merges with water and passes through the coffee particles, along with the oil and soluble substances in the coffee. Due to the difference in density between oil and water, a layer of golden oil will float on the surface of the coffee liquid that falls into the cup.
During the roasting process of coffee beans, a large amount of carbon dioxide is produced in the beans due to structural changes. As time increases after roasting, carbon dioxide will release itself and take away the volatile aroma substances in the coffee. Therefore, if you want espresso to have rich aroma and rich oil, it is especially important to use freshly roasted coffee beans and grind them before extraction.
FrontStreet Coffee currently sells a variety of espresso coffees, including Front Street classic espresso blend, Front Street boutique espresso blend, Front Street commercial espresso blend, Front Street basic espresso blend, and Front Street strawberry espresso. They are all shipped within 5 days after the roasting is completed, so that every customer who orders receives the freshest coffee. The bean-growing period of coffee is about 4-7 days, so the flavor is at its best when customers get it.
Espresso making steps
The single-shot espresso produced by FrontStreet Coffee is about 10 grams of coffee powder, and about 20g of coffee liquid is extracted. The double shot is about 20 grams of coffee powder, and about 40g of coffee liquid is extracted. The extraction water temperature is 94 degrees Celsius, and the extraction time is 20-30 seconds.
A single shot of espresso uses a single powder bowl and a single spout handle to extract a single shot of espresso at one time, while a double shot of espresso uses a baseless powder bowl, baseless handle or handle to extract two shots of espresso in one shot.
First, you need to prepare a special espresso machine, then remove the coffee handle and clean the coffee powder bowl with a special rag to ensure that the powder bowl is clean and free of water stains.
Then use a special grinder to grind the coffee beans very finely. (Note: Before picking up the coffee powder, you need to place the handle on the electronic scale and clear it. Then, after picking up the coffee powder, place the electronic scale on it to ensure that the weight of the coffee powder is consistent every time). When picking up the coffee powder, pay attention to where the coffee powder falls on the handle and ensure that the coffee powder falls evenly on all areas of the handle.
Then spread the coffee powder in the powder bowl as evenly as possible with your fingers, and use the tamper equipped with the coffee machine vertically to fill the coffee powder layer with your arms. Then gently buckle the handle onto the coffee machine to avoid bumping the handle into the coffee machine. Excessive bumps will cause cracks in the coffee powder in the handle, leading to channeling, under-extraction and uneven extraction.
After fastening the handle, immediately turn on the extraction switch and start extracting espresso. When the extraction starts, use an electronic scale to weigh the espresso liquid, and always pay attention to the coffee extraction time and the color status of the coffee liquid. After the extraction is completed, take the powder cake out of the grounds box, clean it with a special rag, and finally put the handle back into the coffee machine.
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
