4 Ways How to Roast Coffee Beans at Home For Beginners

How to Roast Coffee Beans at Home

How about we learn about roasting coffee beans this week? This is a rhetorical question; it is very hard for us to think of anything better than making our own house blend using freshly roasted coffee beans.

Appreciating this procedure further enriches the perception of this work of art and the scientific background associated with it. This also means that your coffee is as fresh as it can possibly be, with the roast being as light or dark as you like.

In actuality, we support home roasting very much and find it pleasant too. Many times, people try to roast coffee beans in their homes for a one-time experience, but they become addicted.

A culture of continuous discovery, wonderment, and fulfilment across a person’s life. In our guide on “How To Roast Coffee Beans At Home” we review several methods and discuss their pros and cons in order to help you get your best cup of homemade coffee.

 what am I expected to do at first?

Fresh home-roasting any high-quality green coffee becomes a very easy task without much time spent. Roasting can be achieved in several ways. Begin with what is there at home now and thereafter.

However, ensure that you catch this short video on the basics first and then begin. It will improve your chances of success in just a few minutes.

4 Ways How to Roast Coffee Beans at Home

4 Ways How to roast coffee at home.

It’s absolutely simple to start diving into the home-roasting world. Choose the method you feel most comfortable with from the following:

Roast in a pan/grill

Roast in an oven

Roast in a popcorn popper

Purpose home coffee roaster.

The cheapest way of getting fresh beans is to roast them in a pan or an oven. However, we believe that if you want to produce the best outcomes, then you should go for either a straightforward popcorn machine or a specific coffee roaster for efficiency and uniformity in your results.

If you’d like to start roasting on a budget, this video will show you how:

4 Ways How to Roast Coffee Beans at Home

 A Word of Caution

​Popcorn machines are specifically designed for cooking popcorn. Roasting coffee in a popcorn machine is not covered by any warranty agreements, the machines would also likely stop functioning after several months of constant use. Besides that, some popcorn machines are not designed for the roasting of beans.

Make sure that your popcorn machine heats on the sides. COFFEE SHALL NOT be roasted in a bottom-heated machine. These will lead to a poor and lumpy roast where the collection of the chaff will burn up and cause house fires.

After every roast remove all chaff. Never leave unattended a popcorn machine.

You might want to invest in a dedicated roaster, but that depends on the cost. This type of roaster is generally designed for the intended results and  thus will often serve you well than a popcorn machine that yields a poorer outcome.

However, there is one technique that we didn’t discuss in this manual – microwave roastings. We can not recommend this method because the outcome is very bad and not consistent. If you want to roast coffee beans at home, use any of the available alternate methods that we have.

It is easy to follow, we guarantee a good roast whatever technique you choose.

Understanding The Roasting Process

In this article, I have outlined the procedure for all four home methods. However, you will need to customize your roasting approach depending on your preferred method.

But what never changes is the process:

Beans get hot

Beans get roasted

Beans get cool

Beans get delicious

The procedure is simple but involves certain procedures that should be noted in order to achieve good performance. This is true for any method for all its important steps.

Let’s take a quick look at what happens during and after roasting so that you know what’s going on while the magic is happening:


Temperature: The generally accepted temperature range 170 C to 260 C. This depends on the technique that you are practising.

Agitation: Beans will never rest and roast. Regular stirring distributes consistent heating throughout and hence a well-roasted coffee.

First Crack: The crack will be made by these beans sounding after 3 to 5 minutes. The existence of this crack means light roasting your coffee beans would be fine for white coffee. It takes this much at least for the production of roasted beans. Roast further, agitate for darker roasts.

Second Crack: Again, a while later, one more crack occurs. This crack shows that the coffee has been roasted at medium levels. A couple of more minutes here, and you are looking at burnt worthless beans. Try different times and settle on your preferred roast.

Tip: The rule of thumb is that we wait around 30 seconds after the second crack.

Cool Down: Transfer the beans to a metal colander/baking paper for cooling. Make use of two metal colanders (plastic won’t stand heat). Put in a bit of effort and shuffle your roasted beans back and forth among colanders. This causes the beans to be cooled fast resulting in removal of the chaff.

To be used in place of a colander by spreading evenly over baking paper. This, however, does not make it a more effective way.

Remove Chaff: The husked coffee bean is called chaff. It is very messy. Outside, or at the sink, cool your beans for easier cleanup.

One of they many thing that one will know only through experience and practice. This video is a good start:

4 Ways How to Roast Coffee Beans at Home

 Post-Roast and Chemistry

The Maillard reaction is simply a name given for a chemical transformation whereby when you roast your green coffee beans, it turns into something awesome.

About 800 compounds are changed from ordinary flavourless ones existing in green beans to fascinating aromatic and tasty compounds contained in roasted beans.

Decomposition and initial transformations of colourant plant compounds like chlorophyll, and anthocyanin take place at the infancy stage of the roasting process. They are also associated with slight aromatic alterations from grassy to popcorn/toasty.

Therefore, green coffee bean bears no resemblance to roasted beans in terms of smell or taste. The compounds of the beans are ready to change!

Roasted coffee beans release gas (CO2): This is still happening two weeks after roasting. Why should you care?

CO2 is a natural preservative for roasted beans as it pushes out oxygen.

Oxidation ruins beans. They become stale

This is especially true if there’s too much CO2 in the coffee beans, which produces too much crema.

Too little CO2 is another undesirable condition and leads to an unpleasant sour taste of the drink.

De-Gas: Wait for 12 hours before sealing in a container and allowing the initial carbon dioxide to escape.

Enclosing freshly roasted beans would cause overpressure of carbon dioxide. It might burst open your container’s lid and affect its functioning.

An unpleasant taste in one’s mouth will be caused by coffee beans with excess CO2. De-gassing your beans in order to give them a chance to breathe.

Opinions differ. A couple of hours or days. Based on our experience, we have concluded that eighteen hours is often acceptable. However, your own experience may not follow this. Do what is suitable for you.

Grinding and Storing after Roasting

Please let’s wait 24 hours and then grind and brew. It requires one day for beans to mature and have an intense flavor.

Store in an airtight container: Maintain its state by using a day or so. point

Nothing beats a freshly brewed cup of coffee. Oxidation will start working on your roasted beans after more than a week.

 Getting Started

Right – I’m not making this complicated for you. You want to roast coffee at home now, so read on and trust me, you’ll be roasting like an expert before you know it…

 1. Buy Green Coffee Beans

Speaking generally, it all begins with the beans that are actually seeds. Fresh beans are green. After drying, they turn several shades lighter. However, they undergo a drastic transformation after roasting them, turning into those appealing brown colors.

Consistency is paramount for great coffee. Choose beans that are uniform in size and colour: this ensures equal flavor and a uniform roast. However, these two elements must also be got right, namely colour and size, if one wants a consistent flavoured coffee and one that doesn’t taste bitter (3​​​​​​​).

If coffee is roasted consistently, barista and consumer will have an assurance to receive a similar cup of beverage at any time.

 2. Roasting

And that’s where the magic comes in. Pick any of these four and let us show you how to have freshness at its best and the sweetest beans you’ll ever eat.

Below we will teach you how to roast in a pan, oven, popcotner and an home roaster.

 Cooking beans on a grill or in a pan

This kind of process is very common for householders who have a pan or a grill handy.

There are lots of such how-to videos on YouTube. But remember, in such a case, as in so many others, be careful with whom you listen–many a DIY roaster tends to over-roast his or her beans!

Avoid using coated/non-stick pans. This will be detrimental to the flavor.

Fast & convenientDifficult to get the correct temperature
No need for additional purchasesVery smoky

What You Need

  • Green coffee beans
  • Thick pan (cast iron/steel/uncoated)
  • Hot plate/Grill (gas is preferred)
  • Colander x 2 (metal)
  • Oven mitts
  • Wooden spoon
  • Air-tight storage container

At a Glance

Roasting time:

15 min + 12 hours

 How to roast beans in a grill/pan?

Maximize ventilation. Power up on the exhaust vent, as well as opening the windows. Get ready for it to be smoky and smelly (good smell/bad smoke!). Going out and grilling for that matter will be more polite towards your other dwelling mates.

Heat a well-oiled, thick pan over medium heat. It can take about 230 C, on average.

However, it might be hard to get a proper temperature one time in the beginning. Search of the most appropriate heat.

It will be easy for anyone to reach the desired temperature using a gas stove/ grill.

Pour in the beans as a thin covering on top. Enough that it mixes without much effort.

Keep Stirring. Never let the beans rest. Ensure they’re heated evenly

After about four and a half to five minutes, listen for the first snap. Your light roast is completed now.

Listen for another cracking sound about 6-7 minutes later. Beans will break again after a couple of minutes, meaning a medium roast. 

If you roast it for too long, your coffee beans will be burnt. On average, most of us will have waited about thirty seconds and off the stove by this third crack.

Dump beans into a colander. Stir and shake. Cool them down ASAP. You should not do that in the sink as it will result in a chaffy mess, hence do it outside. Wear heatproof mitts! Everything will be very hot

To degas beans, expose them for 12 hours.

Note: In the event that you’re going for the gold espresso, this strategy isn’t the most ideal decision. Keep reading.

 Roasting Coffee in the Oven

Another popular DIY home coffee roasting method involves your oven, but be warned: you’ll have to put in some ventilation for it to become smoky!!

A hurricane is not safe for a gale-blowing oven. It will blow away chaff that leaves a huge chaffy mess behind you, which is not an easy thing to clean up.

No need for additional purchasesSlower than other methods
The process of getting the perfect roast is often messy.
Very smoky

 What You’ll Need

Green coffee beans

Oven tray perforated (normal tray works as well).

An oven

Colander x 2 (metal)

Heatproof mitts

Air-tight storage container

 How to roast beans in an oven?

1.Pre-Heat oven to 500F: Crank it up to 11. The point is that there is not a single temperature for all beans and all ovens. From a starting temperature of 500F, try different temperatures in various directions until you determine what works out best for you.

2. Open everything but the oven door: It is going to be smokey out there. Maximize ventilation

3. Spread the green coffee beans over a perforated tray: One layer deep only. Do not stack them!

This would give the best result with a perforated tray. Ensure that the tray does not give room for beans to pass through the holes.

These beans grow during roasting and will jam into any big sufficient holes for a green bean.

Don’t have a perforated tray? However, you can place the beans on a normal metal roasting tray lined at the bottom with some baking paper. Shake them twice while roasting them.

4. Place on a tray on the middle shelf: The centre of the oven provides the most constant temperature.

5. Listen for the first “crack” after 5-7 minutes: You have lightly roasted your beans. Roasting for

beans burns faster if they are cooked for a really long period of time.

6. Listen for the second “crack”: The medium roast beans. After about a minute or so after the second sound, most of us would have waited close to 60 seconds before removing it from the oven.

7. Transfer to a colander. Stir and Shake: Cool them down ASAP. Perform this activity in a sink or outside to avoid the chaffing sloppy mess. Keep in heat-proof mitts throughout.

8. Letting beans air out for 12 hours to release CO2.

Roasting Coffee In A Popcorn Machine

These machines are specially designed to make popcorn. Specifically, some models (particularly for “popped” popcorn) are very effective in roasting the coffee beans. However, ensure that you go through our safety issues of roasting with a popcorn machine firstly.

NOTE: To prevent burning, you need to select a rotating side vented heating system.

SimpleNot built for roasting coffee
Automatically agitate/rotate beansSome of these machines might only last for a couple of times.
Perfectly roasted at an easy time.The duration of use of roasting equipment has no relation to price

What You’ll Need


Side-vented heat popcorn machine.

Wooden spoon

Colander x 2 (metal)

Heatproof mitts

Air-tight storage container

How To Roast Beans In A Popcorn Machine?

1. Ventilate! If at all possible roast near an open window, or better still outside.

2. Pre-heat machine. Depending upon the model and usually within thirty seconds.

Measure ½ cup of beans. Drop into the machine. Ensure the beans can rotate

The bean poppers’s agitation function for the popcorn machine. You have likely overloaded if no stirring.

3. A good way would be to start by using the same amount of beans as the number of corn kernels in the machine recommended.

4. Assist the agitation. Push them with a wooden spatula or spoon until they begin to stir.

Having some steady motions, cover the lid.

Make sure you watch it during the entire roasting and offer assistance if necessary.

In case yours is too big, you can make use of a handle.

5. Pour the chaff into a big container. Sweep up or catch all the chaff which is going to be thrown out by the spout. Make sure your bowl is on even before you put on the lid and then replace the lid.

6. Hear the initial “crack” in about 3-5 minutes. Now you are almost done with a light roast!

7. At about 6-8 minutes, listen out for the second “crack”. You are at medium on your roast. listade: Roasted for an additional 30 – 60 seconds to deepen the brown colour. They will burn if you keep them for much longer.

8. Beans are hot when they come out, thus transfer them between colanders to cool the beans. Always use a mitten when you handle the machine and strainers. It will be as hot as Hades. Avoid having your kitchen in a chaffy mess, try doing it outside or over your sink.

9. The CO2 has to be vented by the beans in a space of 12 hours. This is known as degassing.

Broiling Espresso In A Home Espresso Cooking Machine

Serious people who want to be in the roasting business will always end up purchasing quality home roasters. They are becoming cheaper, and they outdo most other hacks mentioned above because they perform well when it comes to roasting.

In comparison, a good home coffee roaster should be generally more even with its roasting results. You need to maintain uniformity after locating that magic zone if you desire lasting bliss.

First and foremost, there are two that we will suggest. Either the “FreshRoast sr540” is good for those who want to have a small batch roasting or the “Behmor 5400 1600 drum roaster” that

Purpose built and long lastingMore expensive than other options
Simple to use and cleanBulkier than other options

What You’ll Need


Coffee roasting machine

Heatproof mitts

Optional: colander x 2

How To Roast Beans In A Home Coffee Roaster?

  1. Ventilation. There will be a lot of smoke generated from every roasting process, which includes automated devices. point
  2. Turn the machine on. Add beans. Follow the manufacturer’s instructions. The machines are similar in a way despite having different needs.
  3. Monitor the entire roasting process. Many machines claim full automation. However, all these variants (bean size/type, ambient temperature, age of machine, etc…) also affect the roasting time.
  4. Note, too, the first and the second “crack”. The first means a light roast. The second indicates medium. Once you arrive at your preferred roast, finish roasting.
  5. Transfer between colanders to cool the beans: It could even be possible for your machine to have its own cooling procedure. However, if this is not the case, cool them down immediately!
  •     To avoid a mess, do it in the sink or outdoors.
  •      Use the oven mitts for this one.

6. Ensure that the beans have vented off carbon dioxide for a period of 12.0.

Here is a glance at utilising the Fresh roast SR540 to cook at home – an incredible section-level machine:

4 Ways How to Roast Coffee Beans at Home

Store Them Properly

When purchasing pre-roasted beans, always look out for a small valve on the outside of the package. It is a one-way valve where the accumulated CO2 can escape out of the bag, but not let oxygen in so as the beans stay fresh for long.

Some of the options of storage you can opt for also have this one-way valve system. Some of the high-tech solutions pressurize the container using an inert gas.

Your storage can be in Space Age or Stone Age, but it should be airtight. The flavours of the drink should also be preserved for a long time possible, therefore; it should always be kept cool and in the darkness.

A small variation in this regard is a Zevro indispensable SmartSpace dry-food dispenser (below) with an almost airtight delivery – about one ounce in each turn).

SmartSpace dry-food dispenser 

Additionally, there is the Coffee Gator Vacuum Sealed Coffee Canister below which comes with 100% money back for the lifetime warranty. However, all you need to know is that if your beans are stored in this container, then you may have to ensure sealing the same after your usage on each occasion.

 Coffee Gator Vacuum Sealed Coffee Canister

 Coffee Gator Vacuum Sealed Coffee Canister

Having nice storage solutions for them is no problem, but it will only add to the days that your home-roasted beans survive. Nevertheless, you do not need to buy any additional things if you just recycle your old mason jar.

Furthermore, in the event that you haven’t got anything fit for reason, snatch something modest like the tempered steel Friis 16-Ounce Espresso Vault:

stainless steel Friis 16-Ounce Coffee Vault:

Notwithstanding the way that you wind up putting away your beans simply recall:



Keep it Cool

Frequently Asked Questions

What do various coffee roasters imply?

The darkness of coffee roasts influences the the flavor profile. They can also be divided into light and dark ones where light roasts are mild, keeping the bean nuance and retaining the original flavors; however, dark roasts tend to have a smoky flavor, resulting in toast or charcoal flavor that resembles black soot with the

What coffee roast is strongest?

Caffeine, or flavor determines the strength of coffee. Light roasts contain more caffeine but are heavier and therefore only slightly win out when prepared by spoonfuls over dark roasts which are stronger in flavour.

Is light or dark roast coffee better for you?

Coffee, either dark or lightly roasted, has similar benefits for a healthy heart. While dark coffee has slightly more antioxidants, you need to roast the beans as much as possible because you will enjoy the flavours you love. You will also get some additional antioxidants by having another coffee. 

Final thoughts :4 Ways How to Roast Coffee Beans at Home

Finally, home coffee roasting provides an individual, fresh coffee experience. One may select any of the different ways of brewing that exist, either for light or dark roasts. This step is critical and involves paying close attention to some crucial areas like the temperature, agitation and cracking sounds while roasting the coffee.

Ensure you use an airtight, opaque container for the storage of your freshly roasted beans in a cool, dark place. Try various types of roasting and make it an entertaining experience while you work on creating the best coffee at home.

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