"Why does Pour over(V60) coffee have no fat? Is it because the beans are not fresh?" I saw such a discussion topic on Qian Street recently. Hand-brewed coffee is not really free of fat. Although it is not noticeable, it will be reflected in the taste.
What is coffee creme?
When it comes to coffee grease, the first thing you may think of is the golden grease layer on espresso coffee, but you can’t see golden grease in drip coffee or immersion coffee. Why is this? At this time we need to understand boosted extraction.
The roasting process of coffee beans produces a large amount of carbon dioxide within the beans, which is quickly released after the beans are ground. The extraction of espresso requires high pressure to quickly extract the flavor of the coffee. Under the condition of 9Bar pressure and sealing, carbon dioxide and water are in a supersaturated state. At the same time, the coffee oil will be emulsified, and then wrapped with carbon dioxide and extracted together with the coffee liquid. Since the oil is lighter than water, the extracted coffee gradually stratifies, so the golden oil appears on the surface, which looks very attractive.
Factors affecting coffee oil
The amount of coffee oil first depends on the variety of coffee beans. The oil content of the Robusta variety will be higher than that of the Arabica variety. This is why the oil content of the Front Street Italian blend coffee beans can be immediately enriched after adding a small amount of Robusta coffee beans.
Front Street Classic Blend and Front Street Commercial Blend are based on the original Arabica recipe, adding a small amount of Robusta, which can not only enrich the mellow taste, but also bring delicate golden oil to the coffee.
The second is related to the degree of roasting. As the degree of roasting deepens, more carbon dioxide will be produced. When the coffee beans reach a deep roast, they will be highly dehydrated and produce oil. This also explains why when making SOE single-origin espresso, the oil of lightly roasted coffee beans will appear thin no matter how extracted.
For friends who are looking for grease, you can buy Front Street PWN Golden Mandheling, Front Street Queen's Manor, Front Street Blue Mountain No. 1, Front Street Brazilian Semi-Sun and Front Street Columbia Wash. Because they are heated for a longer time, they can emit more gas when exposed to water, and then they are wrapped in soluble substances to form the coffee oil we want.
Why can’t I see crema in Pour over(V60) coffee?
Because of the coffee filters. Coffee filter paper is made of paper pulp fibers stacked on top of each other. The thicker the filter paper feels, the slower the filtration speed, and the better the filtering effect of coffee powder and coffee oil. But thicker filter paper is not better. Too thick filter paper will cause the contact time between coffee powder and water to be longer due to the slow filtration speed, making it easy to cause over-extraction.
A coffee filter paper of moderate thickness can effectively filter fine coffee powder and block more than 80% of coffee oil. The oil that has successfully "passed through" will form an extremely thin layer of oil that is difficult to observe with the naked eye. However, the presence of oil can be felt through the touch of the mouth. The creamy and smooth feeling often mentioned in Front Street are all manifestations of coffee oil in the mouth.
How to make Pour over(V60) coffee with grease?
If you want to retain the crema of Pour over(V60) coffee, you need to remove the filter paper. ("How can you separate the coffee grounds if you remove the filter paper!") Front Street has heard everyone's thoughts. In addition to coffee filters, coffee grounds are filtered through Pour over(V60) coffee metal filters and Pour over(V60) coffee filter cloths.
Due to the structure, coffee filtered through a metal filter can retain most of the oil, but the disadvantage is that fine coffee powder can easily pass through the filter holes, resulting in a poor taste of the coffee. Although the filter cloth can effectively block fine powder and retain some grease, it is also very painful to wash... Because there is grease, it must be carefully washed multiple times after each use to ensure that the remaining grease on it is washed away, otherwise it will affect the taste of the coffee the next time you brew it.
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
