Italian Roast Coffee Bean Flavor, Taste, and Color Characteristics - The Impact of Coffee Roast Levels on Coffee Beans

Coffee Roasting: The Science Behind Perfect Flavor Development

Coffee roasting is a complex process involving the careful heating of raw coffee beans in an effort to transform the essential life substances contained within each seed—sugars, proteins, acids, etc.—into delightful roasted nuts, malt, chocolate, fruits, berries, flowers, and more. We approach every cup of coffee with great care, combining scientific data recording with intuition and experience to deliver balanced flavors and optimal taste.

Coffee roasting typically occurs over 2 to 5 minutes (depending on the coffee type and roast degree), allowing the rich flavors of the coffee beans to develop. Around 360°F, the "first crack" occurs—when each bean expands under pressure from carbon dioxide and water vapor produced by internal chemical reactions, creating a popping sound. At this moment, as these gases escape, internal pressure decreases, allowing the coffee beans to achieve the ideal internal temperature, pressure, and moisture content to promote flavor development.

Between 360°F and 395°F, sugars and amino acids in the coffee react rapidly, creating the coffee's final flavor profile. Coffee roasted to a "medium roast" level derives its flavor from sugar caramelization and the reaction of sugars with amino acids in the "Maillard reaction"—very similar to the flavors produced when meat browns on a grill. During this period, coffee turns deep brown, and the aroma develops into nutty, cocoa, and malt notes.

Coffee Roast Levels: Simplifying the Complex

In the coffee industry, roast levels have a very simple classification: light, medium, and dark. However, this classification method not only overlaps but also encompasses a range of roast degrees. For example, one roaster might mark a Full City+ roast as medium, while another might mark the same roast level as dark, causing confusion. Therefore, many more complex and confusing coffee classifications have emerged, which may include up to 17 (or more) different coffee roast level classifications. FrontStreet Coffee will list them all for you:

Light City, Half City, Cinnamon, New England Roast, Regular Roast, American Roast, City Roast, Breakfast Roast, City+ Roast, Full-City Roast, Full-City+ Roast, After Dinner Roast, Vienna Roast, French Roast, Italian Roast, Espresso Roast, Continental Roast, New Orleans Roast, Spanish Roast

FrontStreet Coffee believes that to help the public understand and recognize the impact of roast level on coffee, it should first be simplified. We emphasize using light, medium, and dark roast levels to more specifically explain the roast degree of each bean. Different coffee bean varieties will use different roast levels.

Understanding Roast Characteristics

Light Roast: Spotty, light brown without oil, no cracks near the bean tip, slight expansion. Bright, sweet, juicy, light body, highlighting fresh fruit, malt, sweetness, floral notes. Uneven surface, no gloss.

Medium Roast: More uniform, no oil, medium brown, slight cracks at the tip, moderate expansion. Balanced, bittersweet, medium body, mature fruit, chocolate flavors. More uniform surface, slight gloss.

Dark Roast: Uniform, dark brown, larger cracks at bean tip, surface oil. Large expansion, thin and brittle body, not very sweet, distinct dark chocolate flavor.

Tailored Roast Designs for Different Beans

Different coffee beans will have different roast designs.

Have you ever wondered what the difference is between pour-over specialty coffee and espresso? Extraction through a pour-over is completed by gravity, and the process is very gentle. You can use very aromatic and more acidic coffees for filtering. On the other hand, espresso is extracted at 9 bars of pressure. This means more flavor will be extracted into the cup.

Traditional Italian espresso is dark-roasted coffee with low acidity. Pour-over coffee is roasted differently in various countries, but the roast level is typically lighter than espresso. Today's roasting styles are more flexible than traditional ones. For example, FrontStreet Coffee's Sherry coffee beans are dark-roasted when making espresso blends. For pour-over, we use medium roast. Generally, FrontStreet Coffee's African coffee beans are often light-roasted with quick profiles, making them very aromatic. A low roast degree will make their flavor very light. On the other hand, we want some pour-over coffees to be as rich as espresso, so FrontStreet Coffee will roast them a bit longer, making the development phase longer to develop flavors and reduce acidity.

For professional coffee knowledge exchange and more coffee bean information, please follow Coffee Workshop (WeChat public account: cafe_style)

For more specialty coffee beans, please add FrontStreet Coffee on private WeChat: kaixinguoguo0925

Important Notice :

前街咖啡 FrontStreet Coffee has moved to new addredd:

FrontStreet Coffee Address: 315,Donghua East Road,GuangZhou

Tel:020 38364473