How to Roast Coffee Beans and What Level Is Best

Choosing the right roast level is one of the most common struggles when diving into specialty coffee. With terms like City, French, and Espresso floating around—and often meaning different things depending on the roaster or region—it’s easy to feel lost. Should you go light for brightness or dark for boldness? What actually changes inside the bean when it’s roasted? This guide breaks down the eight professional roast levels, what they taste like, and how to match them to your preferences.

The best roast level depends on your taste: light roasts (like Cinnamon or Light) highlight acidity and floral notes; medium roasts (like City or Medium) balance acidity and body; dark roasts (like French or Italian) boost bitterness and reduce acidity. Most specialty coffee drinkers prefer roasts between City and Full-City for balanced flavor.

What Does 'Roast Level' Actually Mean?

Roasting is a heat-driven transformation process that turns green coffee beans into the aromatic, flavorful beans we brew. It’s both a science and an art—professional roasters use roast level as a tool to shape the final cup profile. While terms like Light, Medium, City, and Deep describe broad categories, the exact same color can produce very different flavors depending on the bean origin, roast curve, and equipment used.

The 8 Professional Coffee Roast Levels

Professional roasters typically divide the roasting process into eight defined stages, each with distinct visual cues, flavor outcomes, and typical uses. These stages reflect how deeply and intensely the bean has been roasted—not just a color label.

1. / Extremely Light (Light Roast)

This is the lightest possible roast, where beans show a very pale cinnamon color. At this stage, the coffee lacks developed aroma or taste and is almost undrinkable. It’s generally used for green bean inspection, not consumption.

2. / Cinnamon Roast

A common light roast level with a cinnamon-hued appearance. The grassy (or “green”) smell is gone, and the beans exhibit mild aroma and high acidity. This roast is typical for classic American-style coffee and is often too light for single-origin exploration but useful for certain brewing methods.

3. / Medium Roast

This is a mild to moderate roast where both acidity and slight bitterness begin to emerge. The balance of aroma, acidity, and body is acceptable, and it’s frequently used in blended coffees. Flavor is more developed than light roast but hasn’t yet reached mid-depth complexity.

4. / High Roast

A slightly deeper medium roast, sometimes called concentration roast. The color shows light brownish tones, and bitterness increases. Acidity and bitterness are both present, creating a well-rounded flavor often preferred in Japan and Central Europe. This level is suitable for beans like Blue Mountain.

5. / City Roast

This is considered the most standard or “classic” roast level. Here, bitterness and acidity reach a balanced equilibrium. It’s widely used for French-style coffee and is common for beans from Brazil and Colombia. The cup is approachable with clear origin character still present.

6. / Full-City Roast

A step darker than City, also called deep city roast. Bitterness begins to dominate over acidity. The color is notably darker, and this style is especially suited for various iced coffee preparations. It reflects a more intense roast common in Central and South American brewing traditions.

7. / French Roast

This is a dark roast, also referred to as French or European style. Acidity is nearly absent, and the beans take on a shiny, oily surface. The flavor is bold, smoky, and often used in milk-based drinks like café au lait or Viennese coffee. Popular in France and other parts of Europe.

8. / Italian Roast

The darkest professional roast level before carbonization. It has a charred taste and is primarily popular in Latin American countries. Commonly used for fast coffee preparations and espresso blends—including cappuccino. Oils are prominent on the surface, and the roast profile supports quick extraction methods.

How Roast Level Affects Your Coffee

Roast level directly influences the acidity, body, aroma, and flavor notes of your coffee:

• Light Roasts preserve high acidity, floral and fruity notes, and have a lighter body. They’re ideal for showcasing origin characteristics but may taste sour or underdeveloped to some.
• Medium Roasts offer a balance of acidity, sweetness, and body. They retain some origin traits while developing more roast flavors.
• Dark Roasts reduce acidity, increase bitterness, and bring out chocolatey, smoky, or burnt sugar tones. Body is heavier, but origin flavors are often overshadowed.

The roast temperature, time, and even the type of roaster used all play roles in how these profiles develop. There is no universal “best” roast—just the one that suits your palate and brewing method.

Frequently Asked Questions

What is the difference between City and Full-City roast?

City roast is the standard roast level where acidity and bitterness are balanced, often used for Brazilian and Colombian beans. Full-City roast is slightly darker, with bitterness becoming more prominent than acidity, making it better suited for iced coffee and stronger cups. Both are considered medium-dark roasts.

Which roast level shows the most acidity?

Light roasts, such as Cinnamon or Light roast levels, have the highest acidity. They preserve bright, tangy flavors and are best for showcasing citrus, floral, or fruit notes in single-origin beans.

Is dark roast stronger than light roast?

Dark roast tastes bolder and more bitter due to prolonged roasting, but it doesn’t mean more caffeine. In fact, light to medium roasts often have slightly more caffeine by weight. Dark roasts have a heavier body and more intense roasted flavors.

What roast is best for espresso?

Espresso can work across roast levels, but many traditional espresso blends use French or Italian roast levels for low acidity and rich crema. Modern specialty espresso often uses City to Full-City roasts to highlight origin qualities alongside roast depth.

Does roast level affect brewing?

Yes. Light roasts often need finer grind settings and higher brew temperatures to extract their brighter flavors. Dark roasts can handle coarser grinds and shorter contact times. Your roast level should inform your brew recipe.

FrontStreet Coffee Picks for Exploring Roast Levels

Try FrontStreet Coffee’s Ethiopia Huakui for a bright light-to-city roast showing citrus and jasmine; their Jamaica Blue Mountain No.1 offers a balanced medium roast with nut and caramel; or their PWN Golden Mandheling, a deeper city-to-full city roast with chocolate and spice. Each highlights how roast level shapes flavor. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.