All about coffee and roaster in 5 steps

Questions on how to make coffee without machine. 

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Coffee and roaster used to belongs to the household before the 1800's. However, as the folks starts to roast more, grew into company then corporate then multinational, roasting becomes a commercial activity.

And soon, coffee and roaster are things that are done commercially, and roasting becomes such a mystery that if you would to roast your beans -your must be a very obsessed coffee drinkers!

So, to make coffee roaster not so mysterious is to give you -the readers a better understanding.

1. Why roast coffee

Here, is where the relationship between coffee and roaster starts -the 'why'.

Most of you would know that green coffee can stay fresh for more than a year, while roasted coffee can stay fresh at most for a few days, so why roast them and make them so "shelf unstable"?

While, of course the very first thing is because you want to drink them so you have to roast out the flavor. Oh, just for your information, coffee (if that is still what you call them) make from green coffee beans are very bitter and acidic, so do not think it would be an enjoyable beverage!

And, coffee without the roasted aroma, cannot be really termed coffee, right? Yes, and that are the 2 main reasons why you want those green things cooked!

2. What happens during roasting

So, what is the relationship between coffee and roaster during the process?

Firstly, the roasting forces the water out of the beans. This puff up the beans and depending on your roast, sometimes the beans can expand to 2 times it size.

During the process, the natural sugar inside the beans are caramelized into complex flavor essences (the stuff that makes coffee tasty). After the roast, other than being bigger, the beans are also between 15-18% lighter due to the chemical changes.

3. How to roast coffee

There are a lot of ways for this coffee and roaster relationship to work, and it probably take a book just to go into the many different roasters. However, here, we would highlight a 3 major category.

The first, would be the skillet in the oven method, the most low cost relationship between coffee and roaster. No extra equipment is needed, just buy some green beans and roast some beans!

Then there would be the fluid bed roasters, which would be your hearthware gourmet, I-roast 2, the ones that can roast 4 ounces in less than 10 minutes.

Lastly, there would be your drum roasters. In this category, there would be the Gene roasters and of course, the Hot top. This is also the group of roasters that are employing what commercial roasters are using -drum roasting.

4. Where to find those roasters?

I guess after knowing a few things about roasters, you might want to start roasting some beans, so where to find that one?

While, most shopping malls and hyper malls retails the bigger brands. It really take the fun off and parking is such an hassle.

So, the best way to get those roasters is to surf at home, look through the reviews and then get the one that you feel best suits your needs

5. When to start roasting?

Or, maybe you might be thinking of when to start this coffee and roaster relationship. Well, it all depends on the coffee you want to make, the effort you are willing to pour into a simple cup of enjoyment.

To some, nothing is too much, to others, keeping it simple is what they want. Getting a better taste profile and matching that to your lifestyle is what decides if you should even be roasting your own beans!

How about knowing coffee makers to brew your roast?

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About US | OCM Profile

OCM ( was started in 2007 with the first webpage about coffee machines. And for a number of years, we focused on helping people find their desired coffee machine (we still are helping folks with that! So, if you are looking for coffee machines for office or restaurants - check out the link). 

In 2010, we started getting enquiries on restaurant marketing and we start to help food and beverage brands with their marketing. Below are campaigns and events that we have done over the years: 

OCM's campaigns: F&B Marketing Ideas by OCM 

OCM's Events: F&B Industry events by or with OCM

Check out this restaurant marketing guide to learn more about the many campaigns and companies we have worked with. 

Since then, we have also created many marketing workshops and classes for the F&B industry. Many of these modules are still running in tertiary institutions such as Temasek Polytechnic Skillsfuture Academy and also ITE College East COC classes, below are some snippets of our lectures and workshops: 

OCM’s F&B workshops: Food and Beverage Marketing Lectures | Workshops - click to watch classes on customer journey map, JTBD and more. 

So, if you are looking for industry practitioners to help you scale your coffee or F&B businesses, do drop us a message or book an appointment. Do also check out our various social media platforms on regular F&B and coffee market updates: 

For regular coffee (F&B) related videos: OCM Youtube

For Daily Coffee Inspiration (fun coffee content): OCM IG

For insights into the coffee (F&B) industry: OCM LinkedIN 

PS: For the coffee lovers, we continue to share coffee articles (and videos) and have also started a free coffee class section (with free online coffee training supported by coffee partners).

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Previously: Making Coffee with a Coffee Sock

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