Special Guide to Roasting Vietnamese Coffee Beans with An Air Fryer

An 6 Min Read
Roasting Vietnamese Coffee Beans with an Air Fryer

Roasting is a crucial step in the coffee production process as it brings out the distinct flavors and aromas that make Vietnamese coffee so beloved. While traditional methods involve using a coffee roaster, a good air fryer can also be a convenient and effective alternative. In this article, we will explore how to roast Vietnamese coffee beans using an air fryer, providing step-by-step instructions and tips to achieve the perfect roast.

I. Understanding the Roasting Process

Roasting coffee beans is a delicate process that involves applying heat to transform the beans’ chemical composition. During roasting, the beans undergo physical and chemical changes, resulting in the development of flavors, aromas, and the characteristic dark color. Understanding the different stages of the roasting process, from light to dark roasts, is essential for achieving the desired flavor profile.

II. Selecting the Right Air Fryer and Coffee Beans

Choosing the right air fryer is crucial for roasting coffee beans effectively. Look for a model with precise temperature control and sufficient capacity to accommodate the desired quantity of beans. Additionally, opt for high-quality Vietnamese coffee beans that are fresh and have been stored properly to ensure optimal results.

Ingredients need to be prepared:

  • Coffee beans: 300 grams (or how much you want)
  • Tools: Air fryer
  • Glass box with lid

III. Preparing the Air Fryer and Coffee Beans

Before roasting, it’s important to preheat the air fryer to the desired temperature, typically ranging from 180°C to 220°C (356°F to 428°F), depending on the desired roast level. Preheating ensures that the beans roast evenly and consistently.

Spread the coffee beans evenly on the air fryer tray, ensuring they are in a single layer. Avoid overcrowding the tray to allow proper airflow and even roasting. This will promote consistent heat distribution and prevent uneven roasting.

IV. Roasting the Coffee Beans

You set the fryer to 180 degrees for 10 minutes to heat it up. Once the air fryer is preheated, put the coffee in the frying basket, the coffee beans are evenly spread on the tray, and adjust the heat to 200 degrees for 15 minutes. It’s time to start the roasting process. Set the timer according to the desired roast level and keep a close eye on the beans throughout the process to avoid over-roasting or burning. Every 2 minutes, you will open the pot and stir the coffee for 10 seconds/drying time. Continue to repeat this process about 7-8 times.

During roasting, it’s crucial to shake the tray or stir the beans every few minutes to ensure even heat distribution and prevent scorching. This agitation helps to achieve a uniform roast and enhances the development of flavors. It should be noted that you should not pull the pot out completely because at this time a lot of the outer layer of the coffee beans will fly off. If you want to check whether the coffee beans are ripe and meet the requirements, try chewing one bean. If not yet cooked, continue roasting for another 2 – 4 minutes. If it’s cooked, pour it onto a clean and dry tray to let the coffee beans cool quickly and retain the fullest aroma.

V. Determining the Roast Level

The roast level greatly impacts the flavor profile of Vietnamese coffee. Light roasts tend to have a milder flavor and higher acidity, while dark roasts offer a bolder taste with lower acidity. It’s important to monitor the beans closely and determine the roast level based on personal preference. That is, you can set the roasting time in advance, so you will know more about the roasting time of coffee beans.

To determine the roast level, observe the color and listen for the “first crack” and “second crack” sounds. Light roasts will have a light brown color, while dark roasts will be a deep, almost black color. The first crack sound indicates the beans are reaching a medium roast level, while the second crack sound signifies a darker roast.

VI. Cooling and Storing the Roasted Coffee Beans

Once the desired roast level is achieved, remove the beans from the air fryer and allow them to cool completely. This cooling period is crucial as it allows the beans to stabilize and develop their flavors fully. Avoid immediate packaging or grinding to prevent moisture buildup.

After cooling, transfer the roasted coffee beans to an airtight container to maintain their freshness and flavor. It’s recommended to wait 12 to 24 hours before grinding and brewing the beans to allow the flavors to fully develop.


Roasting Vietnamese coffee beans with an air fryer can be a convenient and efficient method to achieve the desired flavor profile. By following the steps outlined in this guide and carefully monitoring the roasting process, you can enjoy the rich flavors and aromas that make Vietnamese coffee so unique. Remember to select the right air fryer, use high-quality coffee beans, and consider personal taste preferences when determining the roast level. With practice and attention to detail, you’ll be able to savor the delightful taste of freshly roasted Vietnamese coffee from the comfort of your home.

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