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HGDB imitating drum-roaster profile
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kahveuno |
Posted on 11/24/2014 5:45 PM
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Newbie Posts: 23 Joined: August 31, 2014 |
I like to share my HGDB (heatgun dogbowl) temperature profile. I used HGDB method for nearly 6 months, before I build my drum roaster. I tried several roasting profiles with the HGDB method and the profile I was using in my recent roasts was aiming to imitate a drum roaster profile. My heatgun has an electronic temperature control which allows me to adjust the blowing air temperature in 10 degrees centigrade steps. For my particular setup, * dogbowl has a mass of 300gr * roasting batch is 125gr or less * heatgun power is 2000W(max) * airflow of the heatgun is always at maximum setting * ambient air temperature is between 20C and 25C And the profile for the heatgun air temperature is: * start at 400C * check the color of the beans (check for yellow) * usually yellow occurs at or before 2 minutes. * drop temperature to 200C, keep for 3 minutes * after 3 minutes, increase temperature 30C (i.e 230C @5minutes approximately) * repeat same after 3 minutes (260C @8minutes approximately) * at 11 minutes make it 290C and keep it at 290C until the end of the roast. * my manual logs show that first crack occurs somewhere after 13:30 minutes and second crack around 16 minutes. * I usually stop before second crack using the smell/smoke (not too much smoke) * dump the beans and cool This profile gives a high heat at the beginning, which is similar to a preheated drum. The tasting results were usually not as bright and complicated as a drum roaster profile but satisfactory. https://twitter.com/#!/KahveUNO
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