View RSS Feed

edtbjon

Gene Cafe Coffee Roasting Chart

Rate this Entry
by , 11th October 2014 at 09:37 PM (2552 Views)
Quote Originally Posted by edtbjon View Post
When I got my Gene Cafe (220V european 50Hz standard), I started out the first couple of batches at max temp (250C all the way) and of course burnt it to black and oily (which was close to my reference from a household oven roasting). This was done well within 15 minutes and the result was barely better than a french roast from the grocery, i.e. dark but really quite thin in taste.
I then found a slow-roast recipe on YouTube which goes like: 180C till 6 minutes (drying phase) then 220C till around 10 minutes (start of first crack territory) and 5-10C increments per minute until done at whatever you like. This approach gave more control and gave me rosting-times around 17-18 minutes. (I was still favouring dark roasts at this point.)
Somewhere around here I found some very useful infomation on SweetM's website about roast degrees with nice pictures on every stage of the roast. Go see and print out for reference...
Then (after a lot of browsing and searching) I decided to go for lighter roasts (read: City+ or so) for e.g. a fruity Panama Geisha or e.g. a good Eteophian Yirgacheffe. I also was inspired and bought a 5kg package ("the fruity package") from a knowledgeable Swedish distributor, to try something new, which I only regret not having found earlier, as there was a lot of excellent tastes to be discovered in these new somewhat lighter roasted beans.
I developed a new scheme: 240C (as the roaster didn't really respond any better at 250C...) up till ending phase of first crack, which is at around 10.30-11 minutes. Then I lower to 225 in order to extend the time between 1 and 2 crack a little bit for control. I rise the temp to 230 at 14 minutes and possibly to 235 at 15-16 minutes (if going for Full City++/Vienna). This gives me very good roasts from City+ (which is as low/light roast as I ever do) to Full City+ and further.
I do have a few (handfull) reference beans in the similar roast degree at hand for comparison. I also use a good light (halogen lamp) which outlights the normal daylight and is invaluable at night, for reference.
In short, my recipe for a good roast of just about any quality bean: 240C till end of first crack (10-11 min), then 225C till 14 min. If not done, rise with 5C every minute until done. Remember that the Gene isn't the best machine for cooling, so brake early. (Good drum machines cool the beans to room temp in e.g. 2 minutes, while the Gene takes 8-10 for the cooling process.)

For whomever is a newcomer to roasting: The roast accelerates throughout the roast (with a a small hint of changing gears at first crack...) so be aware of the speed increase if you are going for at Full City+. Break early, as it will easily coast into a Full French Roast if you wait some 10-20 seconds more.

Submit "Gene Cafe Coffee Roasting Chart" to Digg Submit "Gene Cafe Coffee Roasting Chart" to del.icio.us Submit "Gene Cafe Coffee Roasting Chart" to StumbleUpon Submit "Gene Cafe Coffee Roasting Chart" to Google Submit "Gene Cafe Coffee Roasting Chart" to Twitter

Comments



About Us

    The Home Coffee Roaster Hub, is a Forum Devoted To 9,800+ Coffee Roaster Aficionados, and Coffeecionados, from all over the World. Chat about Coffee Roasting, Roast Coffee Profiles and Logs, Coffee Bean Varieties, and DIY Home Coffee Roaster Projects and Designs.

Follow us on

Twitter Facebook youtube Flickr DavianArt Dribbble



BACK TO TOP

Home Coffee Roaster Hub - ForumJump Navigation Links:

Home Coffee Roaster Hub @ Home Coffee Roaster Hub | Your Feedback and Site News @ Comments @ Home Coffee Roaster Hub | Coffee Article Comments @ Coffee Roaster Article Forum @ Micro-Coffee Roaster Articles and Debate @ Coffee Roaster Modifications @ Hottop Owners Forum @ Hottop Coffee Roaster Forum @ Coffee Shop Forums @ Green Coffee Beans @ Gene Cafe Owners Forum @ Gene Cafe Coffee Roaster Forum @ Behmor 1600 Owners Forum @ Behmor 1600 Coffee Roaster Forum @ Roast Coffee Beans @ Home Coffee Roaster @ Coffee Roaster Reviews and Debate @ Coffee Roasters Lounge @ Off Topic Chat And Debate @ The Humour Zone @ Coffee Roaster Introductions @ Member Introductions @ Coffee Alchemy Forums @ Coffee Forums @ Coffee Bean Media Library @ Coffee Roaster Videos @ Rancilio Owners Forum @ Rancilio Owners Hub @ Gaggia Owners Forum @ Gaggia Owners Hub @ Fracino Owners Forum @ Fracino Owners Hub @ Nespresso Owners Forum @ Nespresso Owners Hub @ Coffee Grinder Videos @ Espresso Videos @ Coffee Gear Emporium @ Coffee Gear Emporium - Member Classifieds @ Odds And Ends Classifieds @ Coffee Roaster Auction Listings @ Coffee Item Wanted @ Crazy Humor Videos @ Coffee Grinder Forum @ Coffee Roaster Review and Debate @ Nespresso Auction Listings @ Fracino Auction Listings @ Gaggia Auction Listings @ Rancilio Auction Listings @ Private Crema Club Forums @ Crema Club Lounge @ Coffee Catering Equipment @ Coffee Equipment Valuations @ Coffee Gear Valuation Forum @ Coffee Retailer and Supplier Feedback @ Coffee Gear Emporium - Member Sales Update @ Coffee Roaster For Sale @ Coffee Grinder For Sale @ Espresso Machine For Sale @ Coffee Accessories For Sale @ Non-Coffee Items For Sale @ Coffee Grinder Auction Listings @ Classifieds Enquiry @ Global Coffee Roaster Network @ Winter Greetings 2019 eNewsletter @ Fracino Roastilino Owners Forum @ Fracino Roastilino Coffee Roaster Forum @ Ikawa Owners Forum @ Ikawa Coffee Roaster Forum @ Aillio Bullet R1 Owners Forum @ Aillio Bullet R1 Coffee Roaster Forum @ Admin HQ @ Recorded History @ Kitchen Cookbook Forum @ The Chef's Table @ Appetizer & Dip Recipes @ Asian Recipes @ Soup Recipes @ Salad Recipes @ European Meat Recipes @ Minced Meat Recipes @ Pasta Recipes @ Seafood Recipes @ Curry Recipes @ Vegetarian Recipes @ Sauce Recipes @ Dessert & Pudding Recipes @ Pastries & Cake Recipes @ Petit Fours Recipes @ Pressure Cooker Recipes @ Microwave Oven Recipes @ BBQ Misc Recipes @ Cheese & Egg Recipes @ Fruit Smoothies @ Today In History @ (¯°·« Webcam World »·°¯) @ Webcam LIVE! @ Webcam UK @ Webcam Europe @ Webcam USA @ Webcam Asia @ Grab A Daily Bargain @ Offers Of The Day @ Timewasters @ Birthday Greetings 2019 @ Coffee Product Reviews @ Coffee Domain URL's For Sale @ Coffee URL's For Sale @ Bulk Green Coffee Beans Offer @ Green Coffee Discount Code 2019 @ Green Coffee 20% Discount Code @ Cormorant CR600 Owners Forum @ Cormorant CR600 Coffee Roaster Forum @