Professional coffee roasters have a huge mission. When coffee is roasted properly, they become better than ever, full of emotions, but just too much they become bad even thrown away, unusable. That is why many coffee growers and coffee roasters (roasters) account for so little.

Join Huongmai Cafe to find answers to some questions about coffee roasting techniques through the article below.

How long does it take to roast coffee?      

It's hard to say exactly how long a roast will take, though roasting coffee takes an average of 12 to 20 minutes, depending on the type of roaster you use and the type and quality of beans. Coffee is roasted, the temperature is from 180 to 250 degrees Celsius. Besides, the roasting of coffee also depends on the finished coffee sample such as: filter coffee, machine coffee, drip, coldbrew...

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By the temperature of the roasting pot they change their original color from light green to brown, dark brown… They also change size and become dehydrated. Towards the end of the heat exchange, the aroma (aroma) begins to release.

What are the changes in the coffee roasting process?

Although coffee roasters are equipped with vents to let the roaster know the roast level or stop roasting immediately if necessary and check to extract samples, skilled roasters will do the main job by ear.

When the beans start to crack (also known as crack), the experienced roaster knows it's time to turn off the machine (turn off the heat). They then open a slide and the sizzling beans pour into a large vat with instant cooling ventilation.

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Roasting coffee is the first step to extract the aroma of coffee beans. The best roasters will adjust the temperature of the coffee roaster to create a variety of flavors and tones, for example: a medium roast will produce a smooth, slightly woody aroma; very aromatic European style and dense black Italian style with a lingering taste in the mouth.

Coffee roasting is really an art

For professional roasters, coffee roasting is an extremely delicate art, but each roaster has different views, so there are many different opinions when it comes to the appropriate roasting temperature for different types of coffee the most delicious in the world.

Processing coffee beans after roasting is very important

And you also need to know, roasted coffee beans must be left to rest for 36 hours before grinding, so the only strength lost from home-roasted beans they have: absolute purity. This is something that many people do not notice, leading to the quality of the coffee not being guaranteed to be the best.

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Freshly roasted coffee beans are immediately poured into a tray, agitated for ventilation to stop self-roasting. The roaster will then evaluate the aroma, color, firmness and have an initial assessment of the quality of the roasted beans. However, the final appraisal is only done after 36 hours because the beans need to be allowed to stand before being brewed and enjoyed.

The above article Huongmai Cafe has references and supplements, hoping to help you in learning about the art of coffee roasting.