Discover the process of producing standard roasted coffee

16-08-2025 81

To create delicious cups of coffee, each coffee bean must go through a long journey from harvesting, processing to roasting. The coffee production process not only requires precise techniques but also dedication and creativity, in order to preserve the natural flavor and the best quality for the drinker. Join Intechvietnam to learn more about the coffee making process in the article below.

Mục lục

Steps in the roasted coffee production process

The roasted coffee production process goes through many stages, from when the coffee beans are still fresh on the tree until they become the final product that reaches the consumer. Here are the basic steps in this process:

Step 1: Coffee Harvest

Coffee is a perennial crop and is only harvested once a year. The harvest time depends on the climate and coffee variety of each region. For Arabica coffee, the harvest season usually lasts from September to December, while Robusta coffee is usually harvested from November to February of the following year.

To harvest effectively, growers need to know the ripening time of the fruit to plan accordingly. Experienced people often harvest carefully to ensure that the fruit and tree are not damaged. There are two common methods: hand picking and machine harvesting.

Hand picking, often used for premium coffee varieties, helps to carefully select each ripe fruit, ensuring the best quality. In contrast, specialized machinery is applied in large farms to increase productivity and save time. However, machine operators need to adjust the equipment properly to avoid affecting the coffee plants.

Step 2: Coffee processing and cleaning

The processing process plays an important role in removing impurities from the coffee fruit, including sand, leaves, branches, and other unwanted materials. Cleaning not only improves the quality of the finished product but also protects the processing equipment, avoiding damage caused by impurities.

The main steps in coffee processing include:

Soaking in water: Coffee fruit is soaked to soften, making it easier to remove the outer shell.
Drying: Coffee beans are dried in natural sunlight for 2 to 3 days to reach the required dryness. The ideal temperature for drying is around 30°C. During this stage, roasting equipment can be used to separate the hull more effectively.
Bean sorting: After processing, coffee beans are screened according to standard sizes (screen 14 or 16). This classification helps the product achieve high uniformity, thereby enhancing the value and quality of coffee.

Thanks to the meticulous process, the coffee product after processing meets quality requirements, ready for the next processing stages.

Step 3: Coffee blending

Coffee blending is the step that creates diversity in flavor, meeting the different needs of consumers. Combining coffee types in certain ratios brings characteristic and unmistakable products. Producers often blend Robusta and Arabica coffee according to specific formulas, such as 2:8, 3:7, or 5:5 ratios.

These blending ratios are customized based on customer preferences or dealer requirements. As a result, each ratio not only creates an independent flavor but can also become the mark of a separate brand. Thanks to that, consumers have more options to find the type of coffee that suits their personal preferences.

Step 4: Roasting coffee

Roasting coffee is an important step, determining the quality and flavor of the final product. Roasting time usually lasts from 8 to 20 minutes depending on the method and equipment. Currently, there are two popular roasting methods: manual roasting and roasting with modern machines.

- Manual coffee roasting

This method often requires the operator to have experience, because coffee beans are prone to uneven roasting, even burning if the temperature is not adjusted properly. The roaster needs to observe the color and feel the aroma to know when the coffee is ripe. Despite the disadvantage of uniformity, the traditional roasting method brings a characteristic rich flavor.

- Coffee roasting by machine

Modern machines help optimize the roasting process by controlling temperature, time and speed precisely. As a result, coffee beans are more evenly and uniformly roasted. Before starting, the operator needs to ensure the machine is clean, set the temperature parameters (190-220°C) and roasting time appropriately for maximum efficiency.

Coffee roasting process:

Temperature 100°C: Coffee beans begin to heat up, water vapor evaporates, beans slightly shrink.
120°C: Beans turn light yellow, light aroma appears.
150°C: The color gradually darkens, the aroma is like toasted bread.
170°C: Beans turn light brown, honey scent passes by.
190°C: Beans reach caramel brown color, sweet aroma.
200°C and above: Beans begin to pop, stronger aroma, suitable for packaging.

Coffee Roast Levels:

Light Roast: The beans are light brown, have no oil, have a distinct sour taste and a light flavor.
Medium Roast: Medium brown, mildly sour, slightly sweet and balanced.
Dark Roast: Dark brown, has a layer of oil on the surface, has a rich flavor and is less sour.
After roasting, the coffee beans are cooled quickly to maintain perfect ripeness, usually within 10-30 minutes. The silk layer is blown away, making the coffee beans ready for the next processing steps.

Step 5: Grinding the coffee

- Choosing the right grinder

Choosing the right grinder will ensure that the coffee bean grinding process is effective, providing a fine powder product and preserving the flavor. You can consider between a manual grinder and an automatic grinder depending on the purpose of use.

Manual grinder: Suitable for small coffee shops, prioritizing the sophistication of each cup of coffee.
Industrial grinder: Suitable for large-scale coffee production businesses, specializing in providing ground coffee or instant coffee. These types of machines often have the ability to grind automatically with high fineness, saving time and effort.

Grinder settings:

The grinder configuration plays an important role in ensuring product quality. Before starting, it is necessary to adjust the parameters such as:

Fineness: Depending on the brewing method, the fineness of the coffee powder will be different.
Grinding time: Make sure not to overload the machine, while maintaining the uniformity of the powder.
Amount of beans: Balance the amount of beans to suit the machine's capacity to avoid clogging or overloading.

- Coffee powder fineness

The fineness of the coffee powder will directly affect the flavor:

Coarse grind: Suitable for French Press, the beans have a fineness similar to sea salt.
Medium grind: Usually used for automatic coffee machines.
Fine grind: Suitable for filter coffee, helps to preserve the traditional flavor.
Super fine grind: Applied when making espresso, bringing a rich cup of coffee with an attractive crema layer.

Step 6: Coffee packaging

The packaging stage plays an important role in preserving and maintaining the quality of coffee. After grinding, the coffee is carefully packaged to preserve the aroma and avoid oxidation or contamination from the environment.

Benefits of proper packaging

Long-term storage: Sealed packaging helps coffee retain its flavor and quality for a longer period of time.
Easy to transport: Sturdy packaging makes the product easy to move without fear of damage.
Increase brand awareness: Brands use packaging to convey messages and build a professional image, attracting customers.
The final packaged coffee will be brought to market or stored in warehouses to meet consumer demand. This helps ensure that the coffee product that reaches customers is always delicious and meets the highest standards.

How to manually roast coffee at home

If you are concerned about the quality of coffee beans or ground coffee sold on the market, roasting at home is an ideal choice. This not only ensures that you get a clean, pure cup of coffee, but also brings joy and a creative experience to coffee lovers.

Below is a detailed guide to the steps of manually roasting coffee that you can refer to:

Step 1: Selecting coffee beans

Start by carefully selecting raw coffee beans. Make sure the beans are of uniform size and of the best quality so that the roasting process goes smoothly and the beans are evenly cooked.

Step 2: Prepare the roasting tools

To roast coffee at home, you need to prepare the necessary tools such as:

Thick-bottomed pan
Wooden spoon to stir the beans
Small stove
Coffee grinder

Step 3: Proceed to roast the coffee

Heat the pan: Place the thick-bottomed pan on the stove and turn on a small fire to heat the pan evenly.
Start roasting: Put the coffee beans in the pan, stir continuously with a wooden spoon to avoid burning the beans. Note, you need to control the temperature so that the beans cook slowly without burning.

Observe the changes in the beans:

Initially, the coffee beans will begin to dry out, shrink and gradually spread their aroma.
When the beans turn dark yellow, you can increase the temperature slightly.

Complete the roasting process: After about 17-20 minutes, the coffee beans will expand evenly, turn dark brown and give off a characteristic aroma. When the desired roasting level is reached, turn off the stove and move on to the cooling stage.

Step 4: Cool and store

Immediately after roasting, the coffee beans need to be cooled quickly to retain the best flavor. Then, store the beans in a sealed jar or bottle, avoiding contact with air for later use.

Step 5: Grind the coffee beans

Use a grinder to grind the roasted coffee beans into a fine powder. The fineness of the powder depends on the brewing method you intend to use, such as filter or espresso. Finally, you are ready to brew and enjoy a cup of rich, pure coffee made by your own hands.

The coffee production process is a perfect combination of traditional techniques and modern technology, helping to bring high-quality coffee products. Whether you are a fan of filter, espresso or instant coffee, each cup of coffee contains the essence of meticulous processing steps. Choose coffee products that are produced according to the correct process to fully enjoy the best flavor!

News