Understanding Coffee Roast Levels: From Light to Dark

If you've ever wondered why one coffee tastes bright and juicy while another is bold and bitter, the answer starts with how the beans were roasted. Roast level dramatically shapes flavor, aroma, and body—but with terms like 'city roast,' 'full city,' and 'French roast' thrown around inconsistently, it's hard to know what you're actually getting. Here's how to understand what's really going on in your bag of beans.

In specialty coffee, roast levels are categorized by when they occur during the roasting process—specifically in relation to the first and second cracks (audible stages of bean expansion and oil release). These stages range from light (just before first crack ends) to dark (well after second crack), each producing dramatically different results.

What Are the Main Coffee Roast Levels?

Coffee roast levels are divided into four broad stages: light, medium, medium-dark (or ‘city+’), and dark. Each stage encompasses specific roast phases defined by the roast timeline relative to the bean’s physical reactions—especially the first and second cracks. These phases include well-known terms like cinnamon roast, city roast, French roast, and Italian roast. Let’s break them down in order.

Light Roast: Bright, Acidic, and Developmentally Light

Light roast stops just before or very early in the first crack. Within this range, there are several sub-levels:

• Light Roast / Cinnamon Roast: Roasted to the point just before the first crack finishes—or slightly into it. This is a very light roast, rarely used commercially except for testing or in some mass-market canned coffee. The beans may be underdeveloped, often requiring a double roast to reach consistency. Expect high acidity, green/herbal aromas, and a persistent grassy note. Visually, the beans appear light brown (cinnamon-colored) with surface speckling and no oil.
• Half City Roast: Essentially another name for a very light roast close to the end of first crack. Similar traits: bright acidity, minimal body, and no visible oil.

Medium Roast: Balanced Acidity and Flavor Development

Medium roast covers the first half of the interval between the end of first crack and the start of second crack. Key levels include:

• Medium Roast / City Roast: Roasted through the first half of the post-first-crack phase, stopping before second crack begins. This is one of the most common roast levels for classic American-style coffee and origin-focused profiles, including beans like Colombia and Brazil. At this stage, the cell structure remains firm so oils don’t surface yet. Acidity is balanced, aroma is more developed, and the beans take on a slight sheen. Flavors highlight the bean’s origin characteristics alongside mild sweetness and body.
• Full City Roast: Roasted into the beginning moments of the second crack—or just before it fully kicks off. Also called ‘full city roast,’ this is a favorite for showcasing balance: acidity remains present but is complemented by deeper caramelization, fuller body, and more obvious roast tones. Often used for Brazilian and Colombian beans to express their ‘full potential.’

Medium-Dark to Dark Roast: Bold Bodies and Diminishing Acidity

These roasts begin well into or after the second crack and are where roast flavors dominate the bean’s inherent taste profile.

• Vienna Roast / City+ Roast: Roasted through most of the second crack. Oils begin migrating to the bean surface. Color deepens, sweetness and bitterness rise, and acidity drops significantly. This is a transitional stage where coffee can take on spicy or nutty notes. The surface shows slight gloss from emerging oils.
• French Roast: A dark roast that occurs well into the second crack. Acidity is nearly gone. The roast character—bold bitterness, heavy body, and smoky-sweet notes—takes over. The beans are very dark brown and shiny with oil.
• Italian Roast / Dark French Roast: Roasted well after the second crack has ended. This is the darkest traditional roast level, where beans approach carbonization. Acidity and origin flavors are fully eclipsed by intense roastiness and bitterness. The beans are black, oily, and emit a pungent, smoky aroma. In Italy, this term isn't actually used—making 'Italian roast' somewhat of a misnomer outside its namesake country.

How Roast Level Affects Coffee Flavor and Appearance

As roast levels deepen, Maillard reactions and caramelization increase, transforming the bean’s sugars, acids, and aromatics. Light roasts preserve more origin characteristics: floral, fruity, and acidic notes shine. Medium roasts balance acidity with sweetness and body. Dark roasts suppress origin traits in favor of bold, bitter, and smoky flavors. Visually, beans shift from light cinnamon brown (light roast) to dark brown with an oily sheen (dark roast).

Frequently Asked Questions

What is the first crack in coffee roasting?

The first crack is the initial audible popping sound that occurs as moisture escapes the coffee bean during roasting, typically happening around 385–400°F (196–204°C). It marks the point where the bean expands and begins developing roast flavors. Roast levels like light and city stop at or just after this stage.

What is the second crack in coffee roasting?

The second crack is a later, more subtle cracking sound caused by the breakdown of the bean’s cellular structure and release of oils, occurring around 435–445°F (224–229°C). Roasts like French, Viennese, and Italian progress through or beyond this stage, leading to darker, oilier beans with bolder flavors.

Which roast level highlights the most origin flavor?

Light to medium roasts (like cinnamon, half city, city, and full city) best preserve the unique flavor characteristics of the coffee’s origin, including fruit, floral, and acidity notes. As roast levels darken, these traits are overshadowed by roast-derived bitterness and sweetness.

Why do some coffees look oily and others don’t?

Oil on the bean surface appears as roasting progresses past the first crack and especially after the second crack begins. Light and medium roasts typically have no visible oil because the bean structure retains it internally. Medium-dark to dark roasts allow oils to migrate to the surface, creating a glossy appearance.

Is Italian roast actually used in Italy?

No. Despite the name, 'Italian roast' is not commonly used in Italy. The term refers to a very dark roast level that’s popular elsewhere but not reflective of typical Italian roasting practices, which tend to favor medium roasts for espresso.

What’s the difference between city roast and full city roast?

City roast stops just before the onset of the second crack and is lighter with more acidity and origin character. Full city roast begins at the onset of the second crack and is slightly darker, with more body, sweetness, and roast flavor while still retaining some acidity.

Recommended FrontStreet Beans for Light & City Roast Profiles

Explore FrontStreet Coffee’s selection of lightly roasted single origins ideal for highlighting origin flavors. The Yirgacheffe Gedeb cooperative lot offers citrus, white flowers, and berry notes with a tea-like body—perfect for pour-over or cold brew. The Ethiopia Humbera (day-lot sun-dried) brings tropical fruits and honey-like sweetness after a gentle medium-light roast. For bright, juicy profiles, try the Panama Boquete Geisha, a high-scoring variety roasted to pull out jasmine, citrus, and honey notes. All three beans demonstrate why light to medium roasting preserves delicate aromatics and acidity. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.