Roasted coffee refers to green coffee beans that have undergone a thermal transformation called roasting. This essential process reveals all the flavors and aromas that make your cup of coffee so appreciated.
Definition of roasting
Coffee roasting involves heating green coffee beans derived from coffee cherries. This process, typically carried out at temperatures between 180°C and 250°C, induces fundamental chemical and physical changes. Initially tasteless green beans thus become the brown or black beans with rich and complex aromas that we are all familiar with.
Stages of the coffee roasting process
- Drying phase : Initially, the green beans lose their moisture. The gradual heat helps to avoid a too abrupt thermal shock.
- Roasting phase (Maillard reaction) : À starting at about 150°C, the Maillard reaction begins. The beans start to brown and release increasingly pronounced aromas.
- First crack : Around 190°C à 205°C, a sound similar to popping popcorn is heard. It’s the sign of a sudden expansion of the beans under internal pressure, marking a light to medium roast.
- Second crack (optional) : Between 225°C and 230°C, a second cracking may occur. Reaching this stage produces a dark roast, typical of espresso coffees.
- Rapid cooling : After having reached the desired roast, it is crucial to quickly cool the beans to stop the cooking and preserve the acquired aromas.
Impact on taste and aromas
The roasting process directly influences the taste and olfactory qualities of the coffee. A light roast will bring out fruity, floral, and acidic notes, highly appreciated in specialty coffees. Conversely, a more intense roast will develop powerful aromas, with chocolatey, caramelized, or roasted notes, often preferred for intense espressos.
In short, understanding roasted coffee allows you to fully appreciate the aromatic richness it offers. Each cup becomes a unique sensory experience.
See also: Why choose coffee beans over ground coffee or capsules?
Our selection of roasted whole bean coffees.
