Front Street uses "Front Street Classic Italian Blend" to make espresso. Front Street Coffee's baristas will first adjust the extraction parameters of the espresso before officially starting to produce it.
Front Street uses a double powder bowl capacity, and the amount of powder is about 18 to 20 grams. When Front Street produces coffee, 20 grams of coffee powder is used. The extraction ratio of Front Street is 1:2, that is, 20 grams of coffee powder extracts 40 grams of coffee liquid. The time is related to the flow rate of the coffee powder. Generally, the duration of a single extraction is controlled between 20 and 35 seconds, because within 20 seconds, the coffee tastes easy to be thin, and if it exceeds 35 seconds, it is easy to over-extract and produce a burnt and bitter taste. Most of the concentrates in the front end are in the range of 28 to 30 seconds.
Before extraction, you need to dry the powder bowl first, turn on the grinder, grind out a double amount of coffee powder, place it on the electronic scale and increase or decrease it to reach a weight of 20 grams. Then use a powder spreader to spread the coffee powder, and press the powder press vertically downward to fill the coffee powder cake tightly to ensure more stable coffee extraction.
Then turn on the extraction switch and let in water for 1 to 2 seconds to moisten the brewing head and take away the coffee grounds stuck on it. Place an electronic scale under the cup where the Espresso is connected, return the weight to 0, and place it under the brewing head during extraction.
Gently snap the handle onto the brewing head and start turning down the extraction switch. Observe the changes in the extraction liquid. When the electronic scale shows that 40 grams of coffee liquid has been extracted, and the time is about 30 seconds, pull down the extraction switch. The brewing parameters will change subtly based on the daily air humidity and the state of the coffee beans, so the amount of coffee powder, scale, and extraction amount of coffee liquid need to be adjusted up or down.
The extracted Espresso can be drank directly, and gargled with a glass of water. You can taste the dense oil foam and the mellow taste of the underlying coffee liquid. If you cannot accept the strong bitter taste, you can also add water and milk according to your preference to dilute and soften the strong taste.
Main features of espresso coffee
Italian espresso, also known as Espresso, is a coffee liquid that Italians use a pressurized coffee machine to quickly extract at high temperature, with a layer of golden foam floating on the surface. Each store uses different espresso beans and extraction methods, so the flavor will be different, but a standard cup of espresso will have the following two characteristics.
Cream
We went to a coffee shop and ordered a cup of espresso. The barista brought it to us as soon as he finished extracting it. You can see a thick layer of golden foam floating on the top, which we call Cream.
When coffee beans are roasted, a large amount of gas is produced. The water dissolves the carbon dioxide under high pressure. However, the brewed coffee liquid gradually returns to normal atmospheric pressure. The coffee liquid cannot continue to trap all the gas components, so countless small bubbles will emerge from the liquid. These foams will remain on top of the coffee liquid and look like a stable layer of "bubbles." The rich and creamy Cream means that the coffee beans used in the espresso are freshly roasted. Since the gas in the coffee beans will continue to escape over time, the further away from the roasting date, the lower the carbon dioxide content and the less foam layer during extraction.
If there is no cream on the top of a cup of espresso, it is likely that the coffee beans have been stored for too long, or that the espresso has not been drunk for a long time and the foam has disappeared. The darker the color of the cream, the richer the taste. Due to the Maynard reaction of coffee beans at high temperatures, darker roasted coffee beans will have a darker foam layer and a mellower taste.
high concentration
The extraction of an espresso requires the release of a large amount of soluble substances in just a few tens of seconds, so the coffee powder needs to be ground very finely and evenly. After nearly boiling hot water and high pressure of 9 atmospheres, the concentration of espresso is very high, all the flavors will be doubled, and the entrance will have a strong taste. After swallowing, various aromas remain in the mouth with a long-lasting aftertaste. Therefore, when many coffee shops serve strong espresso, they will also provide customers with a glass of water.
The surface of a freshly made espresso coffee is covered with a thick, dense layer of golden foam, called crema. This is the result of the carbon dioxide produced by freshly roasted coffee beans being foamed under high pressure in the coffee machine. In order for everyone to drink the full aroma of coffee and enjoy the most complete tasting stage, Front Street only ships freshly roasted coffee beans within 5 days.
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
