How To Roast Coffee Beans
Let's begin from here — what is roasting? It is the process of using heat to turn unroasted coffee beans (green coffee beans) into roasted ones (brown coffee beans). But it isn't as simple as just defining. Here’s what you should know about how to roast coffee with what you have at home.
How to roast green coffee beans?
There are two techniques to achieve freshly roasted coffee.
- To roast it in an oven.
- Using a coffee roasting machine.
The other manners include using a pan, or a grill.
How to prepare coffee beans in the oven
This is a DIY method, because the oven is not a generally suitable equipment for coffee roasting. But you can use it to roast your green coffee beans. Also beware, it is a slow and messy way of coffee beans roasting and you would most likely end up with a smoky and messy room.
What You Need:
- An oven.
- Unroasted Coffee Beans.
- 2 metal colanders.
- Oven tray.
- Mitts, and.
- Air-tight container for storage.
- First, open all the windows and doors to let out the smoke. Then, preheat the kitchen oven to about 500F.
- Put a sheet of baking paper over the over tray and streach the beans (only one layer deep).
- Place the tray on the middle shelf of your oven.
- Listen for a crack. This crack is the first of two cracks and it should happen in about 5 to 7 minutes.
- Remove your roasted beans if you want a light-toned roast.
- The second crack (which should be about 1 minute after the first crack) is for a medium roast and a continued roasting would result in a deep burnt roast.
- Transfer the fresh-roasted coffee beans to a colander and leave for 12 hours to eliminate the CO2 and chaff.
How to roast using a coffee roasting machine?
If you are a coffee enthusiast, we recommend getting your dedicated machine because it is less messy and easier to use.
What You Need:
- Coffee Roasting Machine.
- Hand Mitts.
- Green Coffee Beans.
- The same as with oven, open up all windows and doors because roasting coffee is a smoky job.
- Turn on your machine and add the beans according to the operating manual of your machine (all machines work differently).
- If your machine is automated, you can sit back, relax, and wait for crack sounds. If it is not, set your coffee roasting temperature to about 500F.
- Listen for crack sounds 1 and 2. Turn off the machine immediately you are satisfied with your roast.
- Cool down your roasted beans and leave for 12 hours.
Make sure that your coffee beans are fresh and to your tatse whether or not you are using an oven or a coffee roasting machine. Also, monitor the roasting process so that your beans do not over or under-roast. We hope you find this article helpful. Here are some frequently asked questions about how to roast coffee beans.
How long does it take to roast coffee beans?
After your machine or oven has been preheated (which can vary depending on the material type), it takes less than 10 minutes to reach medium roast and another 12 hours to cool.
How to store roasted coffee beans?
After roasting your coffee beans, it is highly recommended to keep/store your beans in an air-tight container. You can pick your beans for brewing from there.
Why do we roast coffee beans?
The fresh coffee bean is tasteless and smells like 'green vegetables'. Without roasting the coffee, brewed coffee will not produce the delicious taste and fragrance that a roasted bean would.
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