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Roasting Green Coffee at Home: The Ultimate Roadmap to Perfection

Roasting Coffee Beans - Step by Step Guide

It is very easy to get roasted coffee beans from any nearby store. There are various types of roasted coffee available in the market, from dark roast to light roast.

 Yet sometimes I feel like roasting my coffee beans myself. Because it is a very special and enjoyable experience. You will enjoy all stages of coffee roasting, starting with the delicious aroma of roasted coffee.

Roasting coffee at home or in the open air is a very easy process and does not require complicated equipment or a long time. People started roasting coffee long before the advent of electricity.

All you need is fresh coffee and a bowl to roast the coffee in. I will present my experience in this article on the method and importance of fresh roasting coffee beans and how to make your cup of coffee very wonderful.

Coffee roasting determines the good barista and the bad barista

Roasting coffee beans is the first thing you do when you want to make your own coffee. Roasted coffee beans are the cornerstone of any coffee making process. If you’ve ever wondered about starbucks coffee origins, it’s fascinating to learn how big brands source their beans.

Since it is the first process, it is so easy and simple that you cannot imagine. Roasting coffee beans incorrectly will undoubtedly lead to the appearance of an undesirable taste in the coffee.

This taste may be just a slight bitterness that you do not feel at first, but with time and experience you will know that this bitter taste is what distinguishes an excellent barista from a bad barista.

If you like serving great coffee at home or in your coffee shop. You must make sure that the coffee beans are fresh and freshly roasted. It also has to be properly roasted, as you guarantee that those who are served coffee will enjoy this experience.

As I said earlier, experience plays a role in knowing good coffee from bad coffee. Your customers may not distinguish between good coffee and bad coffee, but over time they will gradually move away from your coffee. To ensure that your coffee is always great and hard to compete with, make sure your coffee beans are roasted the right way.

Ever wondered about the intricacies behind the sheen on your coffee beans? Dive deeper into the world of coffee and uncover the Science Behind Oily Coffee Beans. A revelation awaits!

Converting green coffee beans into roasted coffee beans is simple

There are many ways to roast coffee beans. The roasting process is an easy and uncomplicated process and the idea is simple, which is to turn green coffee beans into dark beans. You can roast coffee in any thermal or electrical device that produces heat. For example, you can use a popcorn maker, a frying pan, or even a stainless steel bowl. All of these methods eventually lead to roasted coffee.

 But there are several instructions and steps that must be taken care to follow to get very excellent roasted coffee. The roasting process is the process of extracting the aromatic substances, acids and other components found in the coffee bean. Since we use heat, heat does this process to the fullest. But the heat may cause the coffee beans to completely spoil or lose a large amount of the coffee flavor we want.

Instructions and Tips for roasting coffee beans

Here we will review simple step-by-step instructions that you must follow when you want to roast coffee beans. These instructions can be followed whether you are using a popcorn maker or a frying pan to roast coffee. When you understand the idea, you can implement it regardless of the materials you have.

First Tip: Always Choose Fresh Green Coffee Beans For Roasting

Make sure to get fresh green coffee beans from a trusted place. Currently there are a lot of sellers of green coffee beans from different countries. Green coffee beans should be fresh, dry and slightly moist. If you find green coffee beans too wet or exposed to water, throw them away. Look for green, dry beans.

Second Tip: The Amount Of Coffee Beans Affects The Roasting Time.

The more coffee beans you want to roast, the longer the roasting time. It is always better to roast a small amount that you consume during the day, for example. When roasting a large amount of coffee beans, the process of distributing the heat to the coffee beans will be very difficult. Thus, we will have coffee beans that are well roasted and coffee beans that are still somewhat green. Together, the result will be a strange bitter taste.

To avoid all this, make sure to roast a small amount of coffee. So that this amount is enough for you for a whole day or two hours at least. If you work in a coffee shop, it is best to roast coffee beans, which will suffice your needs for the next two hours. In this way, you will ensure that the coffee beans are roasted to an even degree and thus give a perfectly consistent flavor.

Third Tip: The Smaller The Coffee Roaster, The Higher The Roasting Quality

The smaller the roaster, the better it distributes heat to the coffee beans. And here I will repeat the same idea of ​​the amount of coffee beans, which is supposed to be few when roasting. When using a small roaster, the amount of coffee beans will be few as well. Thus, you make sure that the heat distribution on the parts of the coffee beans will be completely equal, and it is easy for you to put in the amount of coffee beans each time you want to roast.

4th Tip: Temperature Control Is Very Important For Beginners In The Coffee Roasting Process

It is important to have a gas or electric stove with a temperature reading feature. Knowing the temperature helps you predict the end of each stage of roasting. Thus, you can know the appropriate time to raise or lower the temperature. We will explain in detail the stages of roasting coffee beans and the appropriate temperatures for each stage.

Coffee roasting stages – Step by Step Guide

When fresh green coffee beans are available with the appropriate roasting device, you can directly roast the coffee beans. Here I will explain each stage and how to do it correctly.

The First Stage – Processing Green Coffee Beans:

The coffee beans must be green and not roasted beforehand. The coffee beans should be fresh and not very old. The maximum age of the coffee beans harvested from the farm should not exceed six months. The best green coffee beans that can be obtained are those that are not more than one month old.

Prepare the right amount of coffee beans for roasting. It is preferable that this quantity be relatively small and suffice you from three to five days. Because when roasting a large amount of coffee, you will have to store it for a longer time, and therefore it will lose its flavor over time. Unless you want to distribute the excess amount to relatives and friends.

The Second Stage – Start Roasting The Coffee Beans:

As I said here earlier, it is preferable that the coffee roasting machine used should be relatively small and have a wide bowl. The spacious bowl will help you stir the coffee beans faster and more smoothly. During this process, you must monitor the roasting process of the coffee beans constantly and be sure to stir the coffee beans continuously.

The rule here is that the more you roast, the closer the coffee beans will be to burning.

The Third Stage – Stirring The Roasted Coffee Beans On The Heat Source:

And it is the most important process you do during the roasting process of coffee beans. If you leave the coffee unstirred, it will burn very quickly. You can reduce the coffee beans by using a spoon of wood or iron or any material you want. The important thing here is to keep stirring the green coffee beans until their color changes to the color or degree that suits you.

During the roasting process, the moisture inside the coffee beans will be removed, and thus you will notice that the coffee beans begin to expand and take up a larger space of up to 100% of their original size. This is completely normal and proof that the roasting process is going great. The process of stirring is important here because you will help the coffee beans to release the moisture in the proper way and more smoothly. Thus, the coffee beans will not burn.

The Fourth Stage – Storing Roasted Coffee Beans In The Proper Way

When you have finished roasting the coffee beans, leave them in an open place for no more than 12 hours. It is better that this place be dry and less humid. During this time, gasses, including carbon dioxide, will be released from the coffee beans.

Then you must store it in an airtight container. This container must prevent moisture and air from entering the interior. Because the arrival of moisture and air to the roasted coffee beans will accelerate the disappearance of the distinctive flavor of the coffee.

The Roasting Process Of Coffee Beans Takes 20 To 50 Minutes

Because the roasting process of coffee beans must be done at temperatures above 212 degrees Fahrenheit (100 degrees Celsius). The reason for this is because the coffee beans are solid and contain some moisture, which helps them resist heat for a short period. Therefore, you must roast and stir them constantly during this time. In the coffee shops, you find advanced roasting machines that provide the coffee beans with the right heat and stir in an appropriate manner.

Table Of Roasting Temperatures During The Roasting Process Of Coffee Beans

Roasting Stage



Extra Notes

Beginning – start roasting

212 degrees Fahrenheit

100 degrees Celsius


10 minutes or until it turns yellow




  • The coffee beans will turn yellow
  • It smells green.

First Fraction – Very Light Roasting

Raise the temperature to 320 degrees Fahrenheit – 160 degrees Celsius

Duration 10 minutes or less.

  • The coffee beans begin to peel and break.
  • This degree is suitable for very light coffee.
  • Coffee flavor contains some bitterness.

Second fraction – light roasting

430°F – 220°C

5-7 minutes after the first fracture

  • The degree of roasting is very suitable for light air.
  • The coffee’s bitter taste is largely absent.

Second Fraction – Medium Roast

430°F – 220°C

10 minutes after the first break (or 3-5 minutes after light roasting)

  • Medium roasting degree
  • Mild flavor
  • The bitterness of coffee is not present.

Second Fraction – Dark Roast

430°F – 220°C

20 minutes after roasting the first fraction. (or 10 minutes after hummus is medium temperature)

  • Dark roasting degree
  • Strong flavor
  • Zero bitterness of coffee



Get Rid Of Excess Coffee Husks By Using A Fan

After the roasting process is finished, you will find some extra coffee husks. These coffee peels benefit some and use them to prepare a coffee peel drink.

The drink of coffee peels is very well known and used for diet and health in general. One of the best ways to get rid of coffee husks is to bring an electric or manual fan. And then raise the coffee beans high quickly. The air from the fan will blow away the coffee husks.

If you want to take advantage of coffee crusts. Put the coffee beans in a strainer. And then stir it until you filter the coffee peel down. Then use the fan method to get rid of the excess coffee crusts.

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