How long does it take to roast coffee beans: Finding the optimal time

The Importance of Roasting Time

Roasting is the process of transforming raw coffee beans into drinkable coffee. In this process, controlling the roasting time is very important. Different roasting times will have different effects on the coffee beans, including taste, aroma and flavor. Therefore, finding the best roasting time has become a concern for many baristas and enthusiasts.

1. Short development period

In the initial stage, the development stage, coffee beans will undergo a series of changes. First, under high temperature, water begins to evaporate and the internal structure begins to loosen. This stage usually lasts from a few minutes to more than ten minutes.

2. Critical response period

Next comes the reaction period, during which the internal structure changes further and a series of chemical reactions occur, the most important of which are the Mallard reaction and the Luthmann reaction.

Mallard reaction

The Malad reaction mainly refers to the series of chemical reactions that occur in coffee beans when the temperature reaches 180 degrees Celsius. These reactions cause gas to be produced inside the coffee beans and the color begins to darken. This stage usually lasts from a few minutes to more than ten minutes.

Luthmann reaction

The Lussmann reaction refers to the chemical changes in the proteins and sugars inside the coffee beans when the temperature reaches 200 degrees Celsius, forming a series of complex substances. These substances give the coffee beans their special flavor and aroma.

3. Effect of baking time on taste

Baking time has an important influence on the final taste. Baking time that is too long or too short will result in a bad taste.

Too long baking time

If you roast coffee beans for too long, it can cause them to lose their flavor and aroma and become bitter, bland, and tasteless.

Too short baking time

In contrast, roasting the beans for too little time can result in a coffee that tastes too sour and lacks depth and complexity.

4. Find the best baking time

Finding the optimal roasting time is a process that requires constant trial and error. Each type of coffee bean has its own specific ideal roasting time, depending on factors such as its variety, origin, and processing method.

5. Conclusion

In short, controlling the roasting time is crucial to making high-quality coffee. By properly controlling the development period, reaction period and finding the best roasting time, we can get coffee with rich taste and strong aroma.

References:

[1] Rao, S. (2017). The Coffee Roaster's Companion: Scott Rao.

[2] Hoffmann, J. (2018). The World Atlas of Coffee: From Beans to Brewing - Coffees Explored, Explained and Enjoyed: James Hoffmann.