Fire roasted coffee

20160203-coffee-roasting-grillIn my college days, I was often found in a dark corner of a coffee house, sitting on a couch of questionable character, with my face glued to a mug of coffee. I’m talking about unadulterated coffee here, not the sugar-filled-chilled-froufrou-skinny-double-whipped-cocoa variety. Caffeine fueled my studies. Moving to Belgium was like entering rehab. The coffee culture here is completely different and it’s all about the French or Italian roast. Great for espresso, but the beans are so roasted that their origin doesn’t come through. I missed the days of tasting the differences between an Ethiopia Sidamo and a Kenya Bora. Over the past few years though there have been a number of more American style coffee houses/roasters popping up (Thats sounds odd to Belgians because they think that all coffee in the US is watered down truck-stop style coffee). When Mrs. Smokey brought home a bag of beans from the coffee roaster near her office, part of my brain woke up from its coffee coma. After 10 years I was addicted again. The smell of good coffee puts me in a euphoric trance. A complex melange of nuts, chocolate, leather, earth, tobacco, ripe fruit, leaves, and more. When something like that gets a hold of my imagination I want to dive into it.

There are many home-roasters around the world and there are many techniques for doing it. They range from dedicated electric coffee-roasters, popcorn poppers, ovens, to cast iron skillets. After reading a few posts online about turning a rotisserie into a backyard roaster, I knew I wanted to try it out. About a week later, Weber introduced a fine mesh basket for their rotisserie (Only in Europe at the moment). It looked perfect. But would it work?

Weber 22 inch charcoal grill with rotisserie ring and fine-mesh basket

Condensing coffee roasting down to its most basic form you get this:
  • You need high heat
  • You have to keep the beans moving
  • The beans will go through stages of “cracking” (1 or 2 depending on the roast level you want)
  • You want to cool the beans as quickly as possible and remove the chaff
  • Let the coffee beans develop their final aroma and flavor for 48 hours after roasting

(in the above video you can hear the end of the First Crack)

On my first attempt, I used the Weber “Steak House” lump charcoal (Quebracho wood from Paraguay) since this is a very hot burning charcoal. I was really happy with the resulting coffee and the color was spot on for a City+ roast. There was a very light “campfire” smoke note on the nose, with a little carry over to the flavor. Some roasters see smoke as a flaw but there are other roasters (both professional and amateur) that roast over wood-fire and are looking for that character. I for one found it a nice, subtle addition.

For the next few roasting sessions I used coconut briquettes just to see if I could make a “clean” coffee without any smokey notes. The resulting coffees were smoke free, but the fire was lower in temperature. This creates some problems. You have to make sure that you get all the heat right under the coffee beans. If the fire is too cool you end up baking the beans rather than roasting them. Then you get a more bready and grainy coffee. The chaff also doesn’t “explode” off the beans like it should giving you some odd looking beans.

Cooling and de-chaffing the beans is pretty simple. Just pour the beans back and forth between two colanders in front of a fan. After that you will have roasted coffee but you’ll notice that the aroma isn’t quite right yet. Let the beans sit and mature for at least 48 hours. The aroma develops further while the acidity and roast notes mellow.


My process (usually going for a City+ to Full City roast):
  • Light a full chimney starter of charcoal. Wait until all the charcoal is well lit, then dump the charcoal into two charcoal baskets.
    • If using high heat lump charcoal, place the two charcoal baskets a little ways from center on either side of where your spit will be turning
    • If using briquettes, place your charcoal baskets back to back in the center of the grill, under where your spit will go.
  • Add your green coffee beans to the Weber Rotisserie basket and place the spit on the rotisserie ring. I usually roast 1 kg at a time but you could probably fit 2 kg in the basket.
  • make sure all vents are fully open on your grill and close the lid. Resist the temptation to lift the lid and peek.
  • After 7-10 minutes you should hear the first crack beginning (if not, next time try to get a hotter fire going).
  • Once first crack seems to be slowing down, you can start taking a quick peek to keep an eye on the color of the beans.
  • When desired roast level is reached pull the spit out and immediately dump the beans into a colander or screen.
  • Cool the beans by pouring them back and forth between two colanders (or screens) in front of a fan. This will remove the chaff too.
  • Put the cooled beans into a container and let them sit for 48 hours (If it is a completely airtight jar, vent it every once in a while during that time).
  • Don’t waste the charcoal. Throw a chicken on the spit for dinner!


Roasting coffee in this way is a lot of fun and it’s another excuse to fire up the grill and experiment with flavors. It is also quite easy and quick. Just try it out if you like coffee and have a rotisserie. I was quite surprised how much I liked the slight smoke character when I used the quebracho lump. There are a lot of possibilities playing around with smoke and matching it to specific coffees. Of course there is also the whole question of blending which I haven’t really played with much. Once you get into it there are millions of ways to create new flavors in coffee, and that’s before the geeking out really starts.

The beans I’ve been using have been ordered from Fascino Coffee (NL) and Redber Coffee (UK)

Dear Santa,

Christmas is near. Have you written your letter to Santa yet? I’ll be writing mine soon, but first I have to figure out what I will ask for. The list of possible choices is too long.

For the fiery side of life:

For the beery side of life:
  • 27 liter electric canning kettle (To use as an HLT or as boil kettle for smaller batches)
  • 20 liter french oak barrel or 32 liter chestnut barrel (found a good deal on them)
  • 50 liter brew pot (sometimes you just need to brew a bigger batch)
  • march pump
  • a bottle of 1980 De Dolle’s Speciaal Brouwsel
  • a job at a small brewery

hmmm, perhaps that last one sounds the best. Now I just need to write Santa a very convincing letter.

So what are you thinking about asking the big guy for? Anything beer, brewing, fire, or cooking related? Come on, let’s hear from you. I know there aren’t a whole lot of readers of this fine blog, but I’ll be sad if only my wife responds (he says, setting himself up for failure).

a well brewed vacation

detroit_postcardTime to get back at it. Summer vacation is over and there are many things to be grilled and brewed. Vacation was family oriented so there is not a whole lot of news on the BBQ or Beer front, not to say that it was completely void of these activities, but it was not the focus. Family was the priority. However, my brother was able to show off his rib making skills. He received his WSM in March and he’s been smoking up a storm since then. I have to say that his ribs are pretty darn good. I still have yet to master the rib myself. The only outdoor cooking I did on holiday was a stack of Delmonico steaks. Turned out really nice. If anything, I would say they were too juicy… is that possible?

While in the states I picked up a couple of useful accessories to help fuel my charcoal obsession. A new Maverick ET-73 wireless dual-probe thermometer will allow me to see the temp of the meat I am smoking and also the temperature of the cooker itself while I am working around the house. To help protect the probe wires from being crimped and damaged I also bought some probe eyelets from the BBQ guru to install on the WSM. Lastly, before I left on vacation I bought a pizza-stone to use in my new grill. I can’t wait to try it out. There will surely be posts on that in the near future.

On the beery side, there were many a fine brew enjoyed on vacation. Just to name a few of the standouts, Jolly Pumpkin E.S. Bam, New Holland Oak-aged Dragon’s Milk and Southern Tier Mokah. I also met up with TimO from over at The Michigan Brewing Company. I brought him some tasty treats from Belgium as well as some homebrew. All was well received by the man who just a few days before had shattered his leg in 6 or so pieces falling from a ladder. He laid off the pain meds just so he could meet up and have some beer. Now that is dedication!

Thats about it really for the Smoking Bottle portion of my vacation. The rest was baby photo after baby photo… and we loved it!

4griller’s Joy

4grillersjoyI just came across this great accessory for your 22.5″ (57cm) grill. Thanks to the dutch language blog Rookgordijn (Smoke Curtain) for pointing this one out. Its an interchangeable 4 section cast iron cooking grate. The four sections can be used with a variety of different cooking surfaces like a cast-iron grate, grill-stone, griddle and even a chicken stand. It is a very interesting product. I would be asking for one for my upcoming birthday but unfortunately it is only available in the 22.5″ format. All my grills are 18″. Oh well, maybe I can ask for a bigger grill instead! Click on the photo to go to the German manufacturers website.