In the Italian world, that layer of golden-brown crema is what many players are chasing. Whether the fat is thick or fine, directly affects the fusion between the concentrated taste and milk coffee. There is a clear logic from the bean level that determines the performance of fats - variety, ingredients and roasting, these three factors together write the mellow gene of a bean.
Bean species and ingredients are the bottom layer of genes. The lipids and proteins in green coffee beans are the material basis for the formation of crema after roasting. The lipid content of Arabica is higher than that of most beans except Robusta, but the protein and polysaccharide structure of Robusta produce more gas and colloid during high-pressure extraction. This is why adding Robusta to traditional Italian blends can obtain thicker oil. To make oil of the same thickness using the pure Arabica route, you need to find a complement in baking and formula: the classic blended Mamba formula uses Mandheling and two Brazilian high-body bean species to complement each other. Making the oil thicker within the framework of pure Arabica is a direct reflection of the formula idea.
Roast degree is the second layer and the layer that has the most direct impact. During the roasting process, the fiber structure of the bean body is transformed, the porosity increases, and the release potential of soluble substances and gases increases as the roasting degree deepens - the crema of dark roasted beans is usually thicker and darker, while the crema of light roasted beans is thinner but brighter in color. Mandheling beans, which have a solid body after deep roasting, produce rich and long-lasting fat. The dark roasting process of Front Street PWN Indonesian Golden Mandheling is aimed at the goal of "extra rich fat". The crema is deep in color and high in density, and the contrast for making latte art is very good.
Freshness is the third layer and the most overlooked layer. The essence of crema is the foam structure formed by dissolving carbon dioxide under high pressure and releasing it after it comes out of the cup. The amount of carbon dioxide in the beans determines the upper limit of crema. Freshly roasted beans are full of gas, but too much exhaust will make extraction unstable. One to two weeks after roasting is the golden window for Italian beans, when gas storage is sufficient and emissions are within a controllable range. Beans stored for more than a month will lose a lot of carbon dioxide. No matter how good the beans are and how good they are roasted, thick fat cannot be produced. This is why the roasting date is more important than the brand name when choosing beans.
Three layers of genes fall into the selection of beans, which is a clear road map: milk coffee players who pursue thick fat, choose dark roasted Mamba formula or golden mandheling; those who pursue a balance between fat and flavor, the cocoa flavor of black cocoa blend is worthy of its thickness; players who have already bought beans, confirm that the roasting date is within the window, and grow the beans for a week before using, which is the most basic respect for crema.
Oil is not a metaphysics, it is a physical result determined by the ingredients, technology and freshness of a bean. Understand these three layers of genes, and every time you make a choice in front of the bean rack, you will know what you are paying for.
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
