Roast coffee yourself: between the frying pan and the oven

Roast coffee yourself: between the frying pan and the oven

A hobby for real coffee lovers

Roasting coffee yourself is an art. The aim is to elicit more than 800 aromatic substances from coffee beans in dry heat, which make the drink incomparable. And if you like to work between saucepans and bowls, you can enrich your household skills with one aspect: roasting coffee in your own four walls. This is an exciting journey of discovery through various methods with household appliances, but also small, professional machines.

Roast the coffee beans in the pan

Yes, it is possible to roast coffee yourself in the frying pan – but this is not entirely safe. It requires concentration and a small amount of safety equipment. The coffee beans are placed in the pan, which is heated to 200 ° C, controlled with an infrared thermometer. They are constantly being stirred. In general, caution is required: the heat creates gases that cause the beans to burst. For example, protective goggles should be worn by the hobby roaster. Further protective clothing against the heat does no harm. A good ventilation system is very important, because the smell of the coffee roast is strong and can otherwise stick in the apartment for longer.

Roast coffee yourself in the oven

Production in the oven leads to an even more enjoyable result. It is advisable to wash the beans in the oven at 200 ° before roasting. Because then they have fewer skins that would otherwise fly around and contaminate the oven. The roasting process is finished after 10 to 20 minutes, and the coffee is much better quality than from the frying pan, especially when using the fan oven. The beans are now placed in a sieve to cool down as quickly as possible. The expectation that the coffee made in this way tastes as good as that from a professional roast is unfortunately not fulfilled with either method. It is important to know, however, that a coffee develops its maximum aroma around 24 hours after roasting.

Remember: You can always check our shop page for our recommended products that we tested ourselves. We’ve tested espresso makers, espresso machines both fully automatic and portafilters, coffee beans and coffee utensils.

The heat-resistant bowl belongs to the heat gun

You can also roast coffee at home with the heat gun. A fireproof bowl and protective goggles are essential, as the silver skins of the raw beans fly through the air. The challenge of roasting with a heat gun is getting the right distance. It can only be found on the principle of “trial and error”. If it is too small, the heat becomes too strong and destroys important aromatic substances instead of developing them. If it is too big, there is no roasting but only a baking process.

The typical cracking sound of the beans is very close to nature when using the heat gun. The entire roasting process should take about twelve to fifteen minutes. The cracking noise occurs twice during the roasting process: When using the hot air gun, the first time after about five minutes. For a filter coffee, the roast ideally ends between the two cracks. For an espresso, it goes into the second crack. A bread maker is also suitable instead of the fireproof bowl. While the dough mixer keeps the coffee beans moving, the heat gun delivers the necessary heat from above.


By the way: If you have a popcorn machine at home, you can also use it for coffee roasting – just a little fine-tuning is necessary. It combines the possibilities of a heat gun and a bread maker.


Home roasters: inexpensive and efficient

Home roasters are now available in many designs and price ranges from around 200 euros upwards. It starts with the small, manual table roaster and extends to semi-professional devices. If you don’t just grind your coffee yourself at home, but also want to roast it in small quantities, you will find affordable household machines, such as the Dieckmann “Roaster”.

This allows up to 300 grams of green coffee to be roasted comfortably at home. The device also has seven roasting programs, two of which are for espresso, so that the right degree of roast is really available for every taste and every type of bean. And above all, it covers the entire spectrum of all types of preparation: from mild filter coffee to strong espresso. The great thing about the “Röstmeister” is the simple operation. Since these household appliances have an electronic roasting program, they are safe to use even for laypeople – just reading the operating instructions is sufficient.
The devices are also maintenance-free and easy to clean with household means and options; the removable stainless steel drum can even be put in the dishwasher. And it is very important that the normal 230 volt power connection is sufficient for operation. The coffee roaster does not need a commercial power connection with 400 volts, as is necessary for some ice machines, for the home.

Roasting raw coffee beans by hand is (not only) a real experience for coffee lovers. Watch how the beans, which were initially green, slowly darken and develop their characteristic color. The numerous aromas contained emerge and intense flavors and fragrances develop. If you choose the Dieckmann “Röstmeister”, you can get started right away, because the device comes with four different bags of green coffee, each weighing 300 grams. With Brasilia, Guatemala, Kenya and espresso, nothing stands in the way of roasting in your own four walls. This process has its own charm, and who can claim to have roasted the coffee beans for a wide variety of specialties themselves?

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Roasting coffee: The roasting process determines the aroma

Aroma comes from experience

One thing, however, must be clear to every home or hobby roaster: the quality of a good coffee roasted by experienced professionals in high-quality machines does not usually reach domestic production. Then the aroma development does not only come from the roasting process, but above all from the experience of the specialist. The good master roaster knows exactly where the beans come from, how to treat them, and what type of coffee and how the roast should be prepared for. In addition to experience, intuition and passion also help when dealing with temperature and air, speed and duration. Sometimes, it is only a few seconds and tiny temperature deviations that develop the full aroma of the coffee bean.

Someone who does not take care of this central process of coffee production as a trained, full-time coffee specialist with constantly new and growing experience, seldom achieves the quality of specialists with home roasting. One thing applies to professional and hobby roasters alike: the coffee has to outgas for one to two days after roasting – for example in a package with an aroma valve, because this lets the gas out but not oxygen.

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Coffee Aroma: Storage and Shelf Life

Conclusion: a nice and sociable hobby

Home roasting of coffee is a nice leisure activity, suitable as a social event at private parties or as an element of professional team building. The really good coffee, roasted precisely for every type of preparation with full aroma development, is often only produced by experienced professionals with intuition and passion.