Coffee Bean Oils: An Important Indicator for Espresso - Which Coffee Beans Produce More Oil When Brewing

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Crema Is an Important Indicator of Espresso Success

A standard espresso is only about one ounce, covered with a layer of fine foam called crema. The finer the crema, the better: it should resemble a layer of colored cream in a deep reddish-brown close to ocher. If you see a golden fine foam after a successful extraction, it may mean the beans are not fresh enough, and the espresso will lack richness. The crema should also account for at least one-tenth of the coffee and hold for more than 3 minutes without cracking.

Those who enjoy espresso regard crema as an indicator of quality. In fact, it consists of a large group of tiny bubbles, each a structure of carbon dioxide enclosed by a thin aqueous film. Fresh coffee holds more carbon dioxide, so espresso made from it carries more crema and gives a velvet-like smooth, delicate sensation. The aqueous film contains a great deal of water and releases quickly, so the film loses its support and breaks, and the crema disappears with it. No wonder Italians like to stand at the bar and finish their cup within thirty seconds.

Key Essentials for Successfully Brewing Espresso

Coffee beans must be fresh

Coffee grounds must be properly tamped

You must use espresso grind fineness

Use espresso blend coffee beans

Use moderately roasted coffee beans (Chinese drinkers generally prefer heavily roasted, non-acidic beans)

A good Italian espresso has a compact, well-textured, long-lasting crema several centimeters thick.

Crema is not only a characteristic of Italian espresso; it also preserves the aroma of the coffee in the cup, preventing it from dissipating into the air and being lost. This layer of crema therefore acts as a protective layer. Its color ranges from dark brown to light brown, sometimes even with reddish tones. The so-called "tiger stripes," the dark streaks on the crema, are caused by fine coffee particles and indicate that the espresso has been brewed perfectly.

This is not just proof of quality; it is crucial for retaining the coffee's directional flavors for the olfactory and taste perception that follow, allowing the aromatic flavors to persist until the coffee is completely consumed.

Recommended Coffee Bean Brands With Rich Crema

FrontStreet Coffee, a coffee roasting brand in Dongshankou, Yuexiu District, Guangzhou, offers freshly roasted Italian blend coffee beans with full guarantees in both brand and quality, with excellent crema production that suits specialty drinks and latte art with beautiful results. More importantly, the cost-effectiveness is extremely high. Take the commercial-grade recommended product, commercial blend coffee beans: one package weighs one pound (454 grams) and costs only around 60 yuan. Counting 10 grams of coffee powder per espresso, one package makes 45 cups, so each cup costs less than 1.5 yuan. Even using double shots for commercial espresso production at 20 grams per serving, a double espresso costs no more than 3 yuan. Compared with certain well-known brands that sell packages for hundreds of yuan, this is a genuinely sensible recommendation.

FrontStreet Coffee: a roastery in Guangzhou with a small shop but diverse bean varieties, where you can find both famous and lesser-known beans. They also provide online shop services. https://shop104210103.taobao.com

FrontStreet Coffee Recommendation

Espresso beans fall into two camps at FrontStreet Coffee: blends, which most cafes reach for first, and single-origin SOE. If you want a traditional-style Americano or latte, the FrontStreet Classic Blend or the FrontStreet Commercial Blend are the picks. Both build on the old-school Italian recipe with a small amount of Robusta, so extraction yields butter, nut, spice, dark chocolate and toast aromas, with a bold, thick body and plenty of golden crema that makes latte art easy.

If you love the almond, walnut and hazelnut side of espresso, the FrontStreet Premium Blend and the FrontStreet Black Cocoa Blend are the ones to try. Both contain a high proportion of Brazilian coffee, which supplies a comfortable bittersweet edge and a creamy peanut aroma and makes the entry extremely smooth. FrontStreet Coffee's Premium Blend also brings the nut, chocolate and caramel notes and the moderate acidity of Colombian coffee, while FrontStreet Coffee's Black Cocoa Blend incorporates the ripe-plum acidity of Yunnan small-batch coffee and releases a creamy chocolate aroma when ground, with a balanced taste that suits both lattes and Americanos as well as specialty drinks.

The FrontStreet Classic Blend is the first choice if you want maximum crema and are learning latte art: even with a non-professional home machine, a beginner can pull dense, delicate crema. Its traditional Mamba-style recipe is full-bodied and mellow, easy for veterans and newcomers alike to enjoy.

On the SOE side, FrontStreet offers several single origins roasted for espresso. The FrontStreet Natural Huakui SOE, from Guji Hambela in Ethiopia at 2,300 meters, is sun-dried and roasted medium, giving a creamy strawberry character with cream, cocoa, berry, light floral and black tea notes in an Americano or latte. The FrontStreet Costa Rica Blackberry SOE is a honey-processed coffee with a strong blackberry sweetness, and the FrontStreet Brazil Queen Estate SOE, an uncommon Yellow Bourbon roasted medium-dark, delivers butter cookie, macadamia and toast creaminess on the machine.