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Roasting with the Gene (CBR-101) home roaster

Roasting with the Gene home roaster works quite simply. The challenge (and therefore the fun) begins when you start to find the best roast profiles for the Gene roaster and to roast the coffee the way you love it. Below you will find two suggestions to start with. In addition, a selection of possible genes roasting profiles for different coffee beans.

Standard roast with Gene Café CBR-101

  1. Insert the empty glass bulb; press the blue on-off button, set a time of about 6 minutes and a temperature of 200 ° C. Let the roasting machine heat up until the temperature is around 200 ° C.
  2. Press the red button until an "E" appears in the display. Take the piston out, preferably with a cloth or oven mitt. Attention, it is extremely hot.
  3. Fill 200 to 250 grams of raw coffee into the container. In no case more than to the mark. Fix it nicely, set the lid to and with the blue button for 19 minutes, the red one to 240 ° C and start the roasting with the red button.
  4. The coffee is now loaded with heat and dried and then taken directly into the roasting process. You can see how the current and the end temperature flash alternately. You can adjust the temperature and time while roasting. At the first roasting, we would not intervene, but simply watch what happens.
  5. Sometimes it is difficult to hear the crackling in the Gene roaster. You notice, however, that the beans are significantly larger in a short time, many peel loosen and a distinct roasted smell is recognizable. And through the big glass you can observe the colour of the coffee.
  6. After the first crack you wait until you have reached the desired degree of roast.
  7. When the roast is ready, remove the flask with a pot glove, fill the beans in a colander and turn with a wooden trowel or similar to allow the coffee to cool.

Try how the coffee tastes at the same degree of roast when you raise the temperature to 250 ° C and roast it a bit shorter.

P.S. The Gene roaster has a built-in cooling function, but unfortunately that is not great and the coffee cools way too long, is baked and flat in taste. Take the coffee as described above after the roast really right out and cool him, for example; in a spaghetti strainer and with a fan.

Double roast with Gene Café CBR-101

The second roast we have from the book "coffee roasting at home", which we can highly recommend. The author, Claus Fricke, is a pioneer of home roasting in Germany and also the importer of the Gene Coffee Roaster in Germany and so he gives in the book just for the Gene roaster many practical tips. He roasts in a 2-stage process:

  1. Heat beans for approx. 8 to 8:30 minutes at a target temperature of 160 ° C. So they are gently dehydrated. Then stop the roasting process and cool the beans quickly in a sieve. Let stand for 10 to 30 minutes.
  2. Pre-heat the roasting drum empty for 5 minutes at 200 ° C. Press the red button for 3 seconds to interrupt the process and remove the drum with a pot glove.
  3. Put the beans back in, temperature at 200 ° C and time at 18 minutes. Press red button to start roasting.
  4. After 5 minutes (13 minutes on the display), set the temperature to 240 ° C (only turn red button, do not press!)
  5. At about 6:30 minutes in the display, the coffee reaches the first crack. Now bring the temperature down to 210 ° C and roast the coffee to the desired degree of roast
  6. Cancel the roast, remove the butt with a glove and quickly cool the beans in a sieve.

Roasting profiles for different bean types

Gene roasting for Brazilian Santos beans

Ideal for example for natural Bourbon Santos from Brazil

Beans quantity: 230 grams
Pre-heat: 175 ° C
Target temperature 1: 243°C until the first crack
Target temperature 2: 233°C until the end
Roast Development%: 20%

Gene roasting for washed high grown beans from Africa

Ideal for example for Sidamo beans from Ethiopia

Beans quantity: 250 grams
Pre-heat: 200°C
Target temperature 1: 150°C 6 minutes
Target temperature 2: 245°C until the first crack
Target temperature 3: 225°C until the end
Roast Development%: 16-20%

Gene roasting for natural high grown beans from Africa

Ideal for example for Yirgacheffe beans from Ethiopia

Beans quantity: 250 grams
Pre-heat: 200°C
Target temperature 1: 150°C 6 minutes
Target temperature 2: 240°C until the first crack
Target temperature 3: 220°C until the end
Roast Development%: 16-19%

Gene roasting for SHB beans from Central America

Ideal for example for Delicia SHB beans from Guatemala or for Organic Honduras Copan

Beans quantity: 250 grams
Pre-heat: 180°C
Target temperature 1: 245°C until the first crack + 45"
Target temperature 2: 225°C until the end
Roast Development%: 19%

Gene roasting for coffee beans from Indonesia

Ideal for example for Takengon / Gayo beans from Sumatra

Beans quantity: 230 grams
Pre-heat: 200°C
Target temperature 1: 160°C when reached, keep for 1 minute
Target temperature 2: 245°C until the first crack
Target temperature 3: 220°C until the end
Roast Development%: 19-24%

Gene roasting for high grown beans from South America

 

Ideal for example for Honey Castillo, Maragogype or Gesha from Colombia

Beans quantity: 250 grams
Pre-heat: 200°C
Target temperature 1: 150°C 6 minutes
Target temperature 2: 245°C until the first crack
Target temperature 3: 225°C until the end
Roast Development%: 16-20%

Gene roasting for Robusta (Canephora) beans

Ideal for example for Parchment beans from India

Beans quantity: 230 grams
Pre-heat: 210°C
Target temperature 1: 248°C until the first crack
Target temperature 2: 233°C until the end
Roast Development%: 21-25%

Gene roasting for Monsooned Malabar beans

Ideal for example for Monsooned Malabar beans from India

Beans quantity: 200 grams
Pre-heat: 200°C
Target temperature 1: 237°C until the first crack
Target temperature 2: 227°C until the end
Roast Development%: 21-25%

Coffee bean roaster for home use
Kaffeeröstmaschine Hottop KN-8828B-2K+ (Artisan) Hottop Roaster with Artisan (KN-8828B-2K+)
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