Deep roasting has always been a classic roasting direction in the espresso field. In early coffee shops, drinks such as lattes, cappuccinos, and Americanos were almost all based on espresso extracted from dark-roasted beans. Dark roasting not only gives coffee a strong, smoky aroma but also leaves a thick layer of crema on the surface of the extracted coffee, providing clear lines for latte art. With the spread of the specialty coffee concept, espresso bean choices are now more diverse, and medium-dark roasted blends have gradually become mainstream, retaining caramel-like sweetness while making the mouthfeel more balanced and delicate. This article will start from the flavor characteristics of dark-roasted coffee beans, explain in detail the formation principle of the golden crema bubbles on the surface of espresso, and combine three products—Front Street Classic Blend, Commercial Blend, and Dark Cocoa Base Blend—to provide practical bean selection references for home brewing and shop-opening needs.

Deep Roasting

Deep roasting is a degree of roasting favored by the espresso coffee trend. In coffee shops of the past, common drinks such as lattes, cappuccinos, and Americanos were all made with espresso extracted from dark-roasted beans as the base. Dark-roasted beans can bring a strong smoky aroma while also producing a richer crema, so latte art can show clear, sharp lines.

With the evolution of the specialty coffee era, today's espresso beans no longer all use dark roasting, and instead more often use medium-dark roasted blends. This adjustment can retain more light aromatic substances, making the coffee more balanced on the palate while strengthening caramel notes and giving the crema a silky, dense texture.

Italians call this layer on the surface of espresso "Crema." This unique and rich Crema can only be made by an espresso machine, and the core reason lies in pressure. An espresso machine uses 9 bar of water pressure to "squeeze" the coffee puck. Under enormous pressure, the carbon dioxide in the puck causes the water to become supersaturated with carbon dioxide, so the carbon dioxide cannot escape and can only dissolve directly into the coffee liquid.

During extraction, the fats in the coffee are emulsified, and these fats wrap around the carbon dioxide. Because lipids are lighter than water, they gradually separate into layers, and the golden oil eventually floats to the surface, creating a very beautiful visual effect. Many people believe that the essence of an espresso lies in the crema, so they prioritize medium-dark roasted beans.

For learning to make coffee at home, Front Street Classic Blend is the first choice. The design inspiration for this espresso bean comes from the "Mamba" recipe—so-called Mamba is a combination of Indonesian Mandheling beans and Brazilian coffee beans, and the two complement and harmonize in taste. Early coffee shops in Taiwan were very fond of Mamba blends, making it a kind of old-school coffee flavor. Front Street Classic Espresso Blend adds Robusta to the Mamba recipe, fully enhancing the coffee's creamy mouthfeel, making the body of the espresso more solid. It is suitable for home brewing and can also be used for latte art.

When it comes to the coffee beans with the richest crema, Front Street Commercial Blend is unavoidable. If you want to recreate the same Americanos and lattes as in coffee shops, you can buy Front Street Commercial Blend coffee beans. It is blended from three major producing regions—Brazil, Colombia, and Vietnam—and after medium-dark roasting, it has rich crema and roasted aromas. Made into an Americano, it tastes sweet and mellow, very easy to drink; made into a latte, it is rich and smooth, leaving a lingering fragrance after drinking. It is also affordably priced and can become a daily item for shop inventory.

If your coffee shop pursues better value for money, then buy the everyday-grade Front Street Dark Cocoa Base Blend. This bean uses a combination of Yunnan smallholder beans and Brazilian Red Bourbon, combining nutty notes with the acidity of ripe plums. When ground into powder, it gives off the aroma of creamy chocolate. The taste is balanced, the crema is moderate, and the key point is that extraction is stable. It is positioned as delicious but not expensive, so it is absolutely a top choice for both home use and shop opening.

The above content is compiled by CoffeeHunters, a coffee news website.