A Complete Guide to Coffee Bean Roasting

A Complete Guide to Coffee Bean Roasting

The roasting process of coffee beans is to treat the raw beans with high temperature to evaporate the internal moisture and produce aroma and taste. Proper roasting can make the coffee beans have the best taste and flavor. The following will introduce you to the full guide of coffee bean roasting.

1. Raw material selection

Choosing high-quality green coffee beans is the first step to successful roasting. Good raw materials determine the quality of the final product. When choosing, you should consider factors such as type, origin, altitude, etc., and make sure to buy fresh beans without obvious defects or contamination.

2. Storage and preparation

Store the purchased green beans in a dry and ventilated place, away from direct sunlight and humid environment. Before starting to roast, screen, wash and remove impurities from the green beans.

3. Green (unformed) stage

At this stage, the temperature and time need to be adjusted appropriately according to the equipment used. The goal of the green stage is to evaporate the moisture in the green beans and make them dry. During this process, constant stirring is required to ensure uniform heating.

4. Yellow (first burst) stage

When the coffee beans begin to turn yellow, they will make a sound similar to popcorn, which is caused by the rapid expansion of the gas produced by the internal water vaporization. At this time, you need to lower the temperature appropriately and continue stirring to avoid overheating.

5. After the first burst

After the first crack, the coffee beans begin to turn dark brown and emit a rich aroma. At this time, the temperature and time can be adjusted according to personal taste and preference to control the color and flavor of the coffee beans.

6. Before the Second Explosion

Before the second crack, the surface of the coffee beans will form an oily and shiny appearance. At this time, you need to further reduce the temperature and pay close attention to the color change to avoid over-roasting.

7. Second burst stage

The second crack is a sign that the coffee beans have reached the optimal roasting degree. At this time, you need to cool down quickly and stop stirring to avoid over-roasting and burning the beans.

8. Cooling and storage

Cool the roasted coffee beans quickly and store them in a ventilated and dry place. Freshness is essential to maintaining the taste and flavor of coffee beans, so it is recommended to use them as soon as possible or store them in a sealed container.

Summarize

Through the above steps, you can master the correct coffee bean roasting techniques. At different stages, you need to pay attention to adjusting parameters such as temperature, time and stirring to achieve the desired effect. I hope this full guide can help you make delicious coffee with a rich taste and overflowing aroma!